The self aligned cell
Subtitle: scaling up manufacture of a cost effective cell architecture for multicrystalline silicon photovoltaics : phase I: 01/30/09-12/31/09, phase II: 01/20/10-10/19/10
By: A. Gabor and F. van Mierlo
Contributors: National Renewable Energy Laboratory (U.S.); Mierlo, F. van
Series: NREL/SR -- 5200-49934; NREL/SR -- 5200-49934.
Publisher: National Renewable Energy Laboratory
Published: 2010
Place of publication: Golden, Colo
Language: eng
Format: [electronic resource] :
Number of pages: 15
Subjects: Photovoltaic cells; Research; Photovoltaic power generation; Economic aspects
Description: Two areas of technology for fabrication of higher efficiency Si-wafer solar cells were addressed: (1) the formation of structured texturing that is an improvement over the industry-standard isotexture process for multicrystalline wafers. (2) the formation of fine line (<50 micron) metallization seed layers in a self-aligned manner where the fingers can be automatically and perfectly lined up to a selective emitter and where expensive silver screen printing paste can be mostly replaced by plating up the seed layers with silver or copper. The benefits are: a) Lower reflectivity , b) Decoupling the performance of the texture from the saw damage, thus allowing for better advances in sawing and a more robust wet process. 1366 Technologies developed 2 pilot machines for 1) deposition and patterning of low-cost resist layers to enable simultaneous Honeycomb front texturing and groove formation for multicrystalline Si wafers, and 2) fine-line dispensing of materials that are self aligned to the grooves.
Notes: Title from title screen (viewed January 24, 2011).

"NREL technical monitor: Bolko von Roedern."

"Prepared under subcontract no. NAT-9-88012-01."

"December 2010."

"Performing organization, 1366 Technologies, Inc."--Rept. documentation p.

Subcontract report.

DE-AC36-08GO28308 PV10.1199

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