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Proceedings Paper

Review of laser material interaction to improve CIGSeS thin film solar cells
Author(s): Neelkanth G. Dhere; Ashwani Kaul; Juliana Shimada; Aravinda Kar
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Paper Abstract

The best conversion efficiency of champion, small-area CIGSeS cells and mass-produced modules are 20.3% and ~12.0% respectively. Molybdenum back-contact layer is scribed with a laser (P1). Development of laser scribing for P2 and P3 scribes will reduce the dead area and improve the reliability. Development of a laser annealing technique can minimize and passivate micro-non-uniformities and grain boundaries thus reducing carrier recombination. In-situ characterization of the sample through a nonintrusive method such as reflectivity measurement during the laser recrystallization process can enhance insight into laser-material interaction and the effect of material structures on the photoelectric properties of solar cells. The improvement in efficiency achieved with laser processing can help to bring down the cost.

Paper Details

Date Published: 12 October 2012
PDF: 7 pages
Proc. SPIE 8473, Laser Material Processing for Solar Energy, 84730G (12 October 2012); doi: 10.1117/12.940756
Show Author Affiliations
Neelkanth G. Dhere, Univ. of Central Florida (United States)
Ashwani Kaul, Univ. of Central Florida (United States)
Juliana Shimada, Univ. of Central Florida (United States)
Aravinda Kar, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 8473:
Laser Material Processing for Solar Energy
Edward W. Reutzel, Editor(s)

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