VersaEtchTM Etchant/n-Dopant
Single-Formula Selective Emitter Solution for Solar Front Contacts
The new single-formula VersaEtch™ Etchant / n-Dopant material for inkjet selective emitter application of solar front contacts (c-Si) was developed in response to market demand for a solar inkjet solution capable of matching the enhanced cell efficiency and precise deposition performance of other selective emitter approaches, while offering the additional benefits of being non-contact, single-step, and cost-effective.
Features:
- Single-Formula Etchant/Dopant
- Enhanced Cell Efficiency
- Etch Precise, Narrow Features
- Reduced Wafer Scrap
- Simplified Processes
- Industry-Leading Durability
Single-Formula Etchant/Dopant
VersaEtch enables a single-formula, non-contact process for producing front solar contacts by etching through the SiNx ARC layer then diffusion doping the silicon emitter preparing the surface for increased efficiency, screen printed silver contact fingers.
Enhanced Cell Efficiency
Used with the Trident 256Jet-S printhead, VersaEtch can match the enhanced cell efficiency (0.5%-1.0%) of other selective emitter approaches.
Etch Precise, Narrow 50 Micron Features
Together, the VersaEtch Etchant/n-Dopant and 256Jet-S printhead have demonstrated capability to etch precise 50 micron features.
Reduced Wafer Scrap
As a non-contact process, use of the VersaEtch Etchant/n-Dopant can result in up to a 10x reduction in costly wafer scrap compared to the use of contact selective emitter processes such as screen etching or laser etching. Scrap rates currently range from 0.5 -1.0% and can be reduced to as low as 0.1%.
Simplified Processes
Combining the etching and doping processes also elminates the need for very precise alignment of etchant and dopant in two seperate processes.
Industry-Leading Durability
The Trident 256Jet-S industrial printhead was specifically designed for solar applications. The printhead
features stainless steel construction for chemical inertness and a unique repairable design – that allows the nozzle plate to be disassembled, ultrasonically cleaned and reassembled. These features allow the 256Jet-S printhead to last up to 5 times longer than alternative inkjet printheads.
VersaEtchTM Etchant/n-Dopant
Single-Formula Selective Emitter Solution for Solar Front Contacts
The new single-formula VersaEtch™ Etchant / n-Dopant material for inkjet selective emitter application of solar front contacts (c-Si) was developed in response to market demand for a solar inkjet solution capable of matching the enhanced cell efficiency and precise deposition performance of other selective emitter approaches, while offering the additional benefits of being non-contact, single-step, and cost-effective.
Features:
- Single-Formula Etchant/Dopant
- Enhanced Cell Efficiency
- Etch Precise, Narrow Features
- Reduced Wafer Scrap
- Simplified Processes
- Industry-Leading Durability
Single-Formula Etchant/Dopant
VersaEtch enables a single-formula, non-contact process for producing front solar contacts by etching through the SiNx ARC layer then diffusion doping the silicon emitter preparing the surface for increased efficiency, screen printed silver contact fingers.
Enhanced Cell Efficiency
Used with the Trident 256Jet-S printhead, VersaEtch can match the enhanced cell efficiency (0.5%-1.0%) of other selective emitter approaches.
Etch Precise, Narrow 50 Micron Features
Together, the VersaEtch Etchant/n-Dopant and 256Jet-S printhead have demonstrated capability to etch precise 50 micron features.
Reduced Wafer Scrap
As a non-contact process, use of the VersaEtch Etchant/n-Dopant can result in up to a 10x reduction in costly wafer scrap compared to the use of contact selective emitter processes such as screen etching or laser etching. Scrap rates currently range from 0.5 -1.0% and can be reduced to as low as 0.1%.
Simplified Processes
Combining the etching and doping processes also elminates the need for very precise alignment of etchant and dopant in two seperate processes.
Industry-Leading Durability
The Trident 256Jet-S industrial printhead was specifically designed for solar applications. The printhead
features stainless steel construction for chemical inertness and a unique repairable design – that allows the nozzle plate to be disassembled, ultrasonically cleaned and reassembled. These features allow the 256Jet-S printhead to last up to 5 times longer than alternative inkjet printheads.