Title: Enhanced broadband and omnidirectional performance of Cu(In,Ga)Se-2 solar cells with ZnO functional nanotree arrays
Authors: Hsieh, Ming-Yang
Kuo, Shou-Yi
Han, Hau-Vei
Yang, Jui-Fu
Liao, Yu-Kuang
Lai, Fang-I
Kuo, Hao-Chung
Department of Electrophysics
Department of Photonics
Issue Date: 2013
Abstract: An effective approach is demonstrated for enhancing photoelectric conversion of Cu(In,Ga)Se-2 (CIGS) solar cells with three-dimensional ZnO nanotree arrays. Under a simulated one-sun condition, cells with ZnO nanotree arrays enhance the short-circuit current density by 10.62%. The omnidirectional anti-reflection of CIGS solar cells with various ZnO nanostructures is also investigated. The solar-spectrum weighted reflectance is approximately less than 5% for incident angles of up to 60 degrees and for the wavelengths primarily from 400 nm to 1000 nm. This enhancement in light harvesting is attributable to the gradual refractive index profile between the ZnO nanostructures and air.
URI: http://hdl.handle.net/11536/21776
ISSN: 2040-3364
DOI: 10.1039/c3nr34079a
Volume: 5
Issue: 9
Begin Page: 3841
End Page: 3846
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