標題: Crystalline Engineering Toward Large-Scale High-Efficiency Printable Cu(In,Ga)Se-2 Thin Film Solar Cells on Flexible Substrate by Femtosecond Laser Annealing Process
作者: Chen, Shih-Chen
She, Nian-Zu
Wu, Kaung-Hsiung
Chen, Yu-Ze
Lin, Wei-Sheng
Li, Jia-Xing
Lai, Fang-I
Juanig, Jenh-Yih
Luo, Chih Wei
Cheng, Lung-Teng
Hsieh, Tung-Po
Kuo, Hao-Chung
Chueh, Yu-Lun
電子物理學系
光電工程學系
Department of Electrophysics
Department of Photonics
關鍵字: solar cell;Cu(In,Ga)Se-2;laser annealing;ink-printing;flexible
公開日期: 26-Apr-2017
摘要: Ink-printing method emerges as a viable way for manufacturing large-scale flexible Cu(In,Ga)Se-2 (CIGS) thin film photovoltaic (TFPV) devices owing to its potential for the rapid process, mass production, and low-cost nonvacuum device fabrication. Here, we brought the femtosecond laser annealing (fs-LA) process into the ink-printing CIGS thin film preparation. The effects of fs-LA treatment on the structural and optoelectronic properties of the ink-printing CIGS thin films were systematically investigated. It was observed that, while the film surface morphology remained essentially unchanged under superheating, the quality of crystallinity was significantly enhanced after the fs-LA treatment. Moreover, a better stoichiometric composition was achieved with an optimized laser scanning rate of the laser beam, presumably due to the much reduced indium segregation phenomena, which is believed to be beneficial in decreasing the defect states of In-se, V-Se, and In-cu. Consequently, the shunt leakage current and recombination centers were enhancement in photovoltaic conversion efficiency. both greatly decreased, resulting in a near 20%
URI: http://dx.doi.org/10.1021/acsami.7b00082
http://hdl.handle.net/11536/145436
ISSN: 1944-8244
DOI: 10.1021/acsami.7b00082
期刊: ACS APPLIED MATERIALS & INTERFACES
Volume: 9
起始頁: 14006
結束頁: 14012
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