A photovoltaic cell (commonly called a solar cell) is a nonmechanical device usually made from silicon alloys. It converts sunlight into electricity. The PV cell was discovered in 1954 by Bell Telephone researchers. Late 1950s, PV cells were used to power U.S. space satellites.Individual cells can vary in size from about 1 cm (1/2 inch) to about 10 cm (4 inches). Most photovoltaic cells are about ten percent efficient in covering sunlight to electricity with further research being conducted to raise this efficiency to fifteen-twenty percent.Photovoltaic conversion is useful for several reasons. Conversion from sunlight to electricity is direct, so that bulky mechanical generator systems are unnecessary. The modular characteristic of photovoltaic energy allows arrays to be installed quickly and in any size required or allowed.Presently BCSC (Buried Contact Solar Cells) and Polycrystalline CdTe-baser Photovoltaic are the latest technology in the solar cells and having efficiency is around 15-20 % approx. and we can get stable power output and long life.
HOW DOES A SOLAR CELL WORK?
Sunlight is composed of photons, or particles of solar energy. These photons contain various amounts of energy corresponding to the different wavelengths of the solar spectrum. When photons strike a photovoltaic cell, they may be reflected, pass right through, or be absorbed. Only the absorbed photons provide energy to generate electricity. When enough sunlight (energy) is absorbed by the material (semiconductor), electrons are dislodged from the material's atoms. Special treatment of the material surface during manufacturing makes the front surface of the cell more receptive to free electrons, so the electrons naturally migrate to the surface. When the electrons leave their position, holes are formed. When many electrons, each carrying a negative charge, travel toward the front surface of the cell, the resulting imbalance of charge between the cell's front and back surface creates a voltage potential like the negative and positive terminals of a battery. When the two surfaces are connected through an external load, electricity flows.
WHAT IS SCRIBING AND WHY SCRIBING IS NECESSARY?
Scribing means, cutting of a grid pattern of grooves in a semiconductor material generally for the purpose of marking interconnections or to cut the solar cells into two parts.Laser scribing is done for the fabrication of monolithic cell interconnections. Scribing, either with a mechanical stylus or a laser is used for fabricating series interconnections allowing a large, thin-film photovoltaic panels to be made with, for example, 100 cells monolithically interconnected. The series interconnection allows the same electrical power to be produces from the panel with a voltage 100 times that of an individual cell and the current equal to that of one cell. For CdTe thin films, the individual cell voltage is about 0.8V
A photovoltaic cell (commonly called a solar cell) is a nonmechanical device usually made from silicon alloys. It converts sunlight into electricity. The PV cell was discovered in 1954 by Bell Telephone researchers. Late 1950s, PV cells were used to power U.S. space satellites.Individual cells can vary in size from about 1 cm (1/2 inch) to about 10 cm (4 inches). Most photovoltaic cells are about ten percent efficient in covering sunlight to electricity with further research being conducted to raise this efficiency to fifteen-twenty percent.Photovoltaic conversion is useful for several reasons. Conversion from sunlight to electricity is direct, so that bulky mechanical generator systems are unnecessary. The modular characteristic of photovoltaic energy allows arrays to be installed quickly and in any size required or allowed.Presently BCSC (Buried Contact Solar Cells) and Polycrystalline CdTe-baser Photovoltaic are the latest technology in the solar cells and having efficiency is around 15-20 % approx. and we can get stable power output and long life.
HOW DOES A SOLAR CELL WORK?
Sunlight is composed of photons, or particles of solar energy. These photons contain various amounts of energy corresponding to the different wavelengths of the solar spectrum. When photons strike a photovoltaic cell, they may be reflected, pass right through, or be absorbed. Only the absorbed photons provide energy to generate electricity. When enough sunlight (energy) is absorbed by the material (semiconductor), electrons are dislodged from the material's atoms. Special treatment of the material surface during manufacturing makes the front surface of the cell more receptive to free electrons, so the electrons naturally migrate to the surface. When the electrons leave their position, holes are formed. When many electrons, each carrying a negative charge, travel toward the front surface of the cell, the resulting imbalance of charge between the cell's front and back surface creates a voltage potential like the negative and positive terminals of a battery. When the two surfaces are connected through an external load, electricity flows.
WHAT IS SCRIBING AND WHY SCRIBING IS NECESSARY?
Scribing means, cutting of a grid pattern of grooves in a semiconductor material generally for the purpose of marking interconnections or to cut the solar cells into two parts.Laser scribing is done for the fabrication of monolithic cell interconnections. Scribing, either with a mechanical stylus or a laser is used for fabricating series interconnections allowing a large, thin-film photovoltaic panels to be made with, for example, 100 cells monolithically interconnected. The series interconnection allows the same electrical power to be produces from the panel with a voltage 100 times that of an individual cell and the current equal to that of one cell. For CdTe thin films, the individual cell voltage is about 0.8V
We are offering laser welding machine.
Comprehensive..
From slt ltd., you get state of art technological laser systems designed by our own engineers and cad draughtsman and specially tailored to your needs. This is why from slt ltd. You get comprehensive laser competency from a to z.
user friendly.....
The slt ltd. Lwi chambertype unifies intuitive operation, excellent design and ergonomics in fascinating way. Convince yourself.
custom made.....
The innovative slt ltd. Lwi chambertype offers flexible solutions in individual applications. Customer specific modifications are made easily, at any time, from spot diameter and focus length to pulse modulation and handling systems.
economical.....
The slt ltd. Chambertype stands for the highest performance and functionality at an unbeatable and really exceptional cost-performance ratio. Because quality must be affordable.
We are offering laser welding machine.
Comprehensive..
From slt ltd., you get state of art technological laser systems designed by our own engineers and cad draughtsman and specially tailored to your needs. This is why from slt ltd. You get comprehensive laser competency from a to z.
user friendly.....
The slt ltd. Lwi chambertype unifies intuitive operation, excellent design and ergonomics in fascinating way. Convince yourself.
custom made.....
The innovative slt ltd. Lwi chambertype offers flexible solutions in individual applications. Customer specific modifications are made easily, at any time, from spot diameter and focus length to pulse modulation and handling systems.
economical.....
The slt ltd. Chambertype stands for the highest performance and functionality at an unbeatable and really exceptional cost-performance ratio. Because quality must be affordable.
PERMANENT
Laser marking is permanent and indelible marking process, which stands against wiping, scuffing, impacts, wear and tear, can only be removed by grinding or surface removal. Thus laser - marking sustains authenticity of your brand against sort of tempering
NON-CONTACT TYPE
Laser marking is non-contact type process. It does not produce any deformation in product unlike in punching, stamping, pneumatic pin, vibratory pencil etc. This gives accurate and aesthetic marking independent of hardness of material.
FLEXIBILITY
Laser marking is highly flexible process compared to any other marking process. It can mark any images and fonts without changing any punch, die, stencil etc. unlike other conventional process.
AESTHETIC/ACCURACY
Since laser can produce very fine beam with accuracy in micron, many accurate and micro details with precision can be marked with laser marking. Laser can produce aesthetic images which otherwise difficult to create with other marking process.
NO PRE/POST PROCESSING
Since Laser marking is non-contact type, no pre or post processing is required, which in turn significantly increase marking productivity.
LOW OPERATING COST
Laser marking helps significantly in cutting operating cost by reducing labor cost, tool cost, consumable cost, set up time, rejection improved cycle time.
AUTOMATION
One of the prime advantage of laser marking is that it can be automized and can be integrated with any online process. With support of software, even variable serial nos., batch nos., date of bar code can be marked.
PERMANENT
Laser marking is permanent and indelible marking process, which stands against wiping, scuffing, impacts, wear and tear, can only be removed by grinding or surface removal. Thus laser - marking sustains authenticity of your brand against sort of tempering
NON-CONTACT TYPE
Laser marking is non-contact type process. It does not produce any deformation in product unlike in punching, stamping, pneumatic pin, vibratory pencil etc. This gives accurate and aesthetic marking independent of hardness of material.
FLEXIBILITY
Laser marking is highly flexible process compared to any other marking process. It can mark any images and fonts without changing any punch, die, stencil etc. unlike other conventional process.
AESTHETIC/ACCURACY
Since laser can produce very fine beam with accuracy in micron, many accurate and micro details with precision can be marked with laser marking. Laser can produce aesthetic images which otherwise difficult to create with other marking process.
NO PRE/POST PROCESSING
Since Laser marking is non-contact type, no pre or post processing is required, which in turn significantly increase marking productivity.
LOW OPERATING COST
Laser marking helps significantly in cutting operating cost by reducing labor cost, tool cost, consumable cost, set up time, rejection improved cycle time.
AUTOMATION
One of the prime advantage of laser marking is that it can be automized and can be integrated with any online process. With support of software, even variable serial nos., batch nos., date of bar code can be marked.
Excellent Precise Bruiting Due To Rotary
“Zero” Consumables Like Lamp, Flow Tube, DI Filter etc.
75-80% Of Savings In Electricity Due To Single Phase Operation
Excellent Precise Bruiting Due To Rotary
Latest Fiber Laser Technology
Longer Laser Source Life : 3 times greater than other Diode & Green Laser
Precise & stable beam mode continuously : No power drop problem
From table as well as bottom side bruIting facility
No need to carry out table smoothing operation
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Maintenance Free: No need of alignment
Greater Yield: Recovery of extra pieces, which leads to higher yield
Breakage rate is almost NIL
Simple ‘Plug & Play’ system
Simple air cooling
Excellent Precise Bruiting Due To Rotary
“Zero” Consumables Like Lamp, Flow Tube, DI Filter etc.
75-80% Of Savings In Electricity Due To Single Phase Operation
Excellent Precise Bruiting Due To Rotary
Latest Fiber Laser Technology
Longer Laser Source Life : 3 times greater than other Diode & Green Laser
Precise & stable beam mode continuously : No power drop problem
From table as well as bottom side bruIting facility
No need to carry out table smoothing operation
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Maintenance Free: No need of alignment
Greater Yield: Recovery of extra pieces, which leads to higher yield
Breakage rate is almost NIL
Simple ‘Plug & Play’ system
Simple air cooling
BALL RAIL SYSTEM
Smooth & friction guided motion, high precision & high speed ball, long life & better load carrying capacity.
BALL SCREW MECHANISM
Precision movement imparted through ball screw mechanism. Supreme quality of ball screw to provide high accuracy and repeatability at high speed with low noise runner block.
USER FRIENDLY SOFTWARE
User-friendly software for laser power and pulse frequency, pulse duration along with position control.
NESTING
Nesting software to nest different types of jobs in single sheet and optimal use of raw material. Accommodation of different types of jobs from scrap material & common edge cutting. Complete material management through user-friendly software.
HEIGHT SENSING UNIT
Adjusting preset height automatically. It helps to cut little sloppy (non-flat or non-linear) surface of sheet. Non-contact & contact types of versions are available.
STRUCTURAL DESIGN
Structural design is such that it can withstand heavy loads. Vibration pads are used for sustaining the structural damping.
REMOTE CONTROL
Flexible machine controls from remote place with emergency stop facility, easy to understand or self-explanatory audio & video display machine.
SHEET LOADING & CLAMPING
Pneumatically actuated loader with ball on the top of it for easy sliding of the sheet. Pneumatically controlled firm clamping on the sheet. It can adjust the position of the clamp on the table. Safe loading and clamping for operator who is loading and un-loading the sheet.
DETACHABLE OPTICS
Replacements of mirror without any change in linked alignments.
THERMAL OPTICS STABILITY
Parallel water-cooling system with temperature control. It eliminates the thermal expansion of optics and increases peak power life.
OPTICS BELLOWS
Metallic bellows for protection of optics form contamination.
CONTROL & DISPLAY
SIEMENS or PC based SLT Ltd. controls available.
BALL RAIL SYSTEM
Smooth & friction guided motion, high precision & high speed ball, long life & better load carrying capacity.
BALL SCREW MECHANISM
Precision movement imparted through ball screw mechanism. Supreme quality of ball screw to provide high accuracy and repeatability at high speed with low noise runner block.
USER FRIENDLY SOFTWARE
User-friendly software for laser power and pulse frequency, pulse duration along with position control.
NESTING
Nesting software to nest different types of jobs in single sheet and optimal use of raw material. Accommodation of different types of jobs from scrap material & common edge cutting. Complete material management through user-friendly software.
HEIGHT SENSING UNIT
Adjusting preset height automatically. It helps to cut little sloppy (non-flat or non-linear) surface of sheet. Non-contact & contact types of versions are available.
STRUCTURAL DESIGN
Structural design is such that it can withstand heavy loads. Vibration pads are used for sustaining the structural damping.
REMOTE CONTROL
Flexible machine controls from remote place with emergency stop facility, easy to understand or self-explanatory audio & video display machine.
SHEET LOADING & CLAMPING
Pneumatically actuated loader with ball on the top of it for easy sliding of the sheet. Pneumatically controlled firm clamping on the sheet. It can adjust the position of the clamp on the table. Safe loading and clamping for operator who is loading and un-loading the sheet.
DETACHABLE OPTICS
Replacements of mirror without any change in linked alignments.
THERMAL OPTICS STABILITY
Parallel water-cooling system with temperature control. It eliminates the thermal expansion of optics and increases peak power life.
OPTICS BELLOWS
Metallic bellows for protection of optics form contamination.
CONTROL & DISPLAY
SIEMENS or PC based SLT Ltd. controls available.
Inert gas connectionsDual, along the beam axis and switched on via flexible inlet.
COMPREHENSIVE.....From SLT Ltd., you get state of art technological laser systems designed by our own engineers and CAD draughtsman and specially tailored to your needs. This is why from SLT Ltd. you get comprehensive laser competency from A to Z.
USER FRIENDLY.....The SLT Ltd. LWI Chambertype unifies intuitive operation, excellent design and ergonomics in fascinating way. Convince yourself.
CUSTOM MADE.....The innovative SLT Ltd. LWI Chambertype offers flexible solutions in individual applications. Customer specific modifications are made easily, at any time, from spot diameter and focus length to pulse modulation and handling systems.
ECONOMICAL..... The SLT Ltd. Chambertype stands for the highest performance and functionality at an unbeatable and really exceptional cost-performance ratio. Because quality must be affordable.
COMPREHENSIVE.....From SLT Ltd., you get state of art technological laser systems designed by our own engineers and CAD draughtsman and specially tailored to your needs. This is why from SLT Ltd. you get comprehensive laser competency from A to Z.
USER FRIENDLY.....The SLT Ltd. LWI Chambertype unifies intuitive operation, excellent design and ergonomics in fascinating way. Convince yourself.
CUSTOM MADE.....The innovative SLT Ltd. LWI Chambertype offers flexible solutions in individual applications. Customer specific modifications are made easily, at any time, from spot diameter and focus length to pulse modulation and handling systems.
ECONOMICAL..... The SLT Ltd. Chambertype stands for the highest performance and functionality at an unbeatable and really exceptional cost-performance ratio. Because quality must be affordable.
PERMANENT
Laser marking is permanent and indelible marking process, which stands against wiping, scuffing, impacts, wear and tear, can only be removed by grinding or surface removal. Thus laser - marking sustains authenticity of your brand against sort of tempering
NON-CONTACT TYPE
Laser marking is not-contact type process. It does not produce any deformation in product unlike in punching, stmping, pneumatic pin, vibratory pencil etc. This gives accurate and aesthetic marking independent of Hardness of material.
FLEXIBILITY
Laser marking is highly flexible process compared to any other marking process. It can mark any images and fonts without changing any punch, die, stencil etc. unlike other conventional process.
AESTHETIC/ACCURACY
Since laser can produce very fine beam with accuracy in micorn, many accurate and micro details with precision can be marked with laser marking. Laser can produce aesthetic images which otherwise difficult create with other marking process.
NO PRE/POST PROCESSING
Since Laser marking is non-contact type, no pre or post processing is required, which in turn significantly increase marking productivity.
LOW OPERATING COST
Laser marking helps significantly in cutting operating cost by reducing labor cost, tool cost, consumable cost, set up time, rejection improved cycle time.
AUTOMATION
One of the prime advantage of laser marking is that it can be automize and can be integrated with any online process. With support of software, even variable serial nos., batch nos., date of bar code can be marked.
PERMANENT
Laser marking is permanent and indelible marking process, which stands against wiping, scuffing, impacts, wear and tear, can only be removed by grinding or surface removal. Thus laser - marking sustains authenticity of your brand against sort of tempering
NON-CONTACT TYPE
Laser marking is not-contact type process. It does not produce any deformation in product unlike in punching, stmping, pneumatic pin, vibratory pencil etc. This gives accurate and aesthetic marking independent of Hardness of material.
FLEXIBILITY
Laser marking is highly flexible process compared to any other marking process. It can mark any images and fonts without changing any punch, die, stencil etc. unlike other conventional process.
AESTHETIC/ACCURACY
Since laser can produce very fine beam with accuracy in micorn, many accurate and micro details with precision can be marked with laser marking. Laser can produce aesthetic images which otherwise difficult create with other marking process.
NO PRE/POST PROCESSING
Since Laser marking is non-contact type, no pre or post processing is required, which in turn significantly increase marking productivity.
LOW OPERATING COST
Laser marking helps significantly in cutting operating cost by reducing labor cost, tool cost, consumable cost, set up time, rejection improved cycle time.
AUTOMATION
One of the prime advantage of laser marking is that it can be automize and can be integrated with any online process. With support of software, even variable serial nos., batch nos., date of bar code can be marked.
Low weight loss compared to other flash lamp based machines.
Maintenance Free: No need of alignment.
Smooth cutting surface.
Breakage rate almost 'NIL'
Ergonomic Design with Aluminium extruded structure
User Friendly software
Low weight loss compared to other flash lamp based machines.
Maintenance Free: No need of alignment.
Smooth cutting surface.
Breakage rate almost 'NIL'
Ergonomic Design with Aluminium extruded structure
User Friendly software
Accurate Laser Scanning for Measuring Groove and Cavity
Precise Planning for Achieving the Best Yield
Uniform Marking of ID-Number, Text & Logo
An indiginized system for laser scanning and marking – a very much essential tool in diamond processing to get maximum yield from rough diamonds.
Advanced Vision System provides accurate scanning of the diamond.
3D Algorithms to check numerous options for planning the diamond.
Maps holes & grooves using precise laser scanning.
Latest Fiber Laser Technology for marking which has longer laser source life.
Biggest remainder piece by weight on single click.
Facility of customized creation as per desired weight.
Unique ID - Number marking for each marking lines, which eliminates human errors while sawing & bruting.
Text & Logo inscription enables the user for brand identity.
Marking options, Light, Medium and Dark, provide flexibility to the user for marking darkness.
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Qualitative marking lines are uniform black and aligned. So, it is easily visible while sawing & bruting.
Bruting marking with safe side, which leads to safe, accurate & faster bruting.
It can be integrated with selected bruting system so that bruting data can be transferred easily and minimizes errors.
Multilingual software - in Gujarati & English.
New feature of impurity plane.
Accurate Laser Scanning for Measuring Groove and Cavity
Precise Planning for Achieving the Best Yield
Uniform Marking of ID-Number, Text & Logo
An indiginized system for laser scanning and marking – a very much essential tool in diamond processing to get maximum yield from rough diamonds.
Advanced Vision System provides accurate scanning of the diamond.
3D Algorithms to check numerous options for planning the diamond.
Maps holes & grooves using precise laser scanning.
Latest Fiber Laser Technology for marking which has longer laser source life.
Biggest remainder piece by weight on single click.
Facility of customized creation as per desired weight.
Unique ID - Number marking for each marking lines, which eliminates human errors while sawing & bruting.
Text & Logo inscription enables the user for brand identity.
Marking options, Light, Medium and Dark, provide flexibility to the user for marking darkness.
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Qualitative marking lines are uniform black and aligned. So, it is easily visible while sawing & bruting.
Bruting marking with safe side, which leads to safe, accurate & faster bruting.
It can be integrated with selected bruting system so that bruting data can be transferred easily and minimizes errors.
Multilingual software - in Gujarati & English.
New feature of impurity plane.
An indiginized system for laser scanning and marking – a very much essential tool in diamond processing to get maximum yield from rough diamonds.
Advanced Vision System provides accurate scanning of the diamond.
3D Algorithms to check numerous options for planning the diamond.
Maps holes & grooves using precise laser scanning.
Latest Fiber Laser Technology for marking which has longer laser source life.
Biggest remainder piece by weight on single click.
Facility of customized creation as per desired weight.
Unique ID - Number marking for each marking lines, which eliminates human errors while sawing & bruting.
Text & Logo inscription enables the user for brand identity.
Marking options, Light, Medium and Dark, provide flexibility to the user for marking darkness.
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Qualitative marking lines are uniform black and aligned. So, it is easily visible while sawing & bruting.
Bruting marking with safe side, which leads to safe, accurate & faster bruting.
It can be integrated with selected bruting system so that bruting data can be transferred easily and minimizes errors.
Multilingual software - in Gujarati & English.
New feature of impurity plane.
An indiginized system for laser scanning and marking – a very much essential tool in diamond processing to get maximum yield from rough diamonds.
Advanced Vision System provides accurate scanning of the diamond.
3D Algorithms to check numerous options for planning the diamond.
Maps holes & grooves using precise laser scanning.
Latest Fiber Laser Technology for marking which has longer laser source life.
Biggest remainder piece by weight on single click.
Facility of customized creation as per desired weight.
Unique ID - Number marking for each marking lines, which eliminates human errors while sawing & bruting.
Text & Logo inscription enables the user for brand identity.
Marking options, Light, Medium and Dark, provide flexibility to the user for marking darkness.
According to the type of rough diamond, flexible laser marking provides no damage risk to the diamond.
Qualitative marking lines are uniform black and aligned. So, it is easily visible while sawing & bruting.
Bruting marking with safe side, which leads to safe, accurate & faster bruting.
It can be integrated with selected bruting system so that bruting data can be transferred easily and minimizes errors.
Multilingual software - in Gujarati & English.
New feature of impurity plane.
Automatic Direction Change
Unique Push-Fit System
Longer Scaif Life
Perfect Weight Control Device
Blocking & Polishing for any diamond bigger than 5 cent in size.
Full travel in diamond scaif surface as per its size viz. 24,26,28 or 30 mm ensuring longer scaif life.
Weight Control Device - for best & effective cutting : Optional - Manual / Automatic.
Automatic Chal change feature.
Push - Fit system : special time saving in changing of die.
Special feature of diamond protection which shows "Error" on keyboard automatically in case of fault in machine or during operation.
Automatic battery back up in case of power failure.
Different program according to different roughs - 2 pt., 3 pt., 4 pt., etc.
Keyboard in both the languages - English & Gujarati
Option : Special facility to interface with computer.
Automatic Direction Change
Unique Push-Fit System
Longer Scaif Life
Perfect Weight Control Device
Blocking & Polishing for any diamond bigger than 5 cent in size.
Full travel in diamond scaif surface as per its size viz. 24,26,28 or 30 mm ensuring longer scaif life.
Weight Control Device - for best & effective cutting : Optional - Manual / Automatic.
Automatic Chal change feature.
Push - Fit system : special time saving in changing of die.
Special feature of diamond protection which shows "Error" on keyboard automatically in case of fault in machine or during operation.
Automatic battery back up in case of power failure.
Different program according to different roughs - 2 pt., 3 pt., 4 pt., etc.
Keyboard in both the languages - English & Gujarati
Option : Special facility to interface with computer.
All-I-In-One: Laser Diamond Blocking-Bruiting-Sawing
Higher Total Yield Compared To Conventional Methods
Almost 85% Diamond Processed In Single Setting
One Time Fixing For The Whole Process
All-in-one: laser blocking (faceting)- bruiting- table sawing
No need to stick the diamond at every stage. Single die can be used throughout the process.
Almost 85% diamond process in one machine
Recovery of extra pieces
Total yield is more compared to traditional methods.
Ergonomic design
Smooth cutting surface
User friendly software
All-I-In-One: Laser Diamond Blocking-Bruiting-Sawing
Higher Total Yield Compared To Conventional Methods
Almost 85% Diamond Processed In Single Setting
One Time Fixing For The Whole Process
All-in-one: laser blocking (faceting)- bruiting- table sawing
No need to stick the diamond at every stage. Single die can be used throughout the process.
Almost 85% diamond process in one machine
Recovery of extra pieces
Total yield is more compared to traditional methods.
Ergonomic design
Smooth cutting surface
User friendly software
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