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8.01% CuInGaSe2 solar cells fabricated by air-stable low-cost inks

Title
8.01% CuInGaSe2 solar cells fabricated by air-stable low-cost inks
Authors
Wang, W[Wang, Wei]Han, SY[Han, Seung-Yeol]Sung, SJ[Sung, Shi-Joon]Kim, DH[Kim, Dae-Hwan]Chang, CH[Chang, Chih-Hung]
DGIST Authors
Kim, DH[Kim, Dae-Hwan]
Issue Date
2012
Citation
Physical Chemistry Chemical Physics, 14(31), 11154-11159
Type
Article
Article Type
Article
ISSN
1463-9076
Abstract
CuInGaSe 2 (CIGS), a promising thin film solar cell material, has gained lots of attention in decades due to its high energy conversion efficiency and potential lower manufacture cost over conventional Si solar cells. As a cheaper processing method compared to vacuum-based techniques, solution-based deposition has been successfully applied to fabricate electronic devices, such as transistors and solar cells. In this paper, we reported CIGS thin film solar cells with an energy conversion efficiency reaching up to 8.01% using air-stable, low-cost inks. The newly developed inks consist of commercially available, low-cost compounds and solvents and can be processed using a variety of printing and coating techniques. More importantly, the inks can produce CIGS films free of copper selenides and amorphous carbon, two common by-products from solution-based CIGS processes. The mechanism for the transformation from metal salt precursor films to CIGS absorber thin films and the influence of selenium vapour pressure on absorber film quality and photovoltaic device performance were investigated and discussed. High-quality CIGS films with micrometer-sized crystals were obtained by using higher selenization partial pressure. © 2012 the Owner Societies.
URI
http://hdl.handle.net/20.500.11750/3421
DOI
10.1039/c2cp41969f
Publisher
ROYAL SOC CHEMISTRY
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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