Nanosecond laser scribing of CIGS thin film solar cell based on ITO bottom contact

Title
Nanosecond laser scribing of CIGS thin film solar cell based on ITO bottom contact
Authors
정증현최재명Seungkuk KukZhen WangShi FuYi Yin YuDavid J. Hwang
Keywords
CIGS; TCO back contact; monolithic integrated module; laser scribing
Issue Date
2018-03
Publisher
Applied physics letters
Citation
VOL 112, NO 13-134102-5
Abstract
Cu(In,Ga)Se2 (CIGS) thin films, a promising photovoltaic architecture, have mainly relied on Molybdenum for the bottom contact. However, the opaque nature of Molybdenum (Mo) poses limitations in module level fabrication by laser scribing as a preferred method for interconnect. We examined the P1, P2, and P3 laser scribing processes on CIGS photovoltaic architecture on the indium tin oxide (ITO) bottom contact with a cost-effective nanosecond pulsed laser of 532 nm wavelength. Laser illuminated from the substrate side, enabled by the transparent bottom contact, facilitated selective laser energy deposition onto relevant interfaces towards high-quality scribing. Parametric tuning procedures are described in conjunction with experimental and numerical investigation of relevant mechanisms, and preliminary mini-module fabrication results are also presented.
URI
http://pubs.kist.re.kr/handle/201004/67476
ISSN
0003-6951
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KIST Publication > Article
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