標題: Dandelion-shaped nanostructures for enhancing omnidirectional photovoltaic performance
作者: Kuo, Shou-Yi
Hsieh, Ming-Yang
Han, Hau-Vei
Lai, Fang-I
Tsai, Yu-Lin
Yang, Jui-Fu
Chuang, Tsung-Yeh
Kuo, Hao-Chung
電子物理學系
光電工程學系
Department of Electrophysics
Department of Photonics
公開日期: 2013
摘要: Broadband and omnidirectional light harvesting is important in photovoltaic technology because of its wide spectral range of radiation and the sun's movement. This study reports the fabrication and characterization of zinc oxide (ZnO) dandelions on Cu(In,Ga)Se-2 (CIGS) solar cells. The fabrication of dandelions involves the combination of self-assembled polystyrene (PS) nanospheres and the hydrothermal method, which is one of the simplest and cheapest methods of fabricating a three-dimensional, closely packed periodic structure. This study also investigates the optimization on dimension of the PS nanospheres using the rigorous coupled-wave analysis (RCWA) method. This study uses an angle-resolved reflectance spectroscope and a homemade rotatable photo I-V measurement to investigate the omnidirectional and broadband antireflections of the proposed dandelion structure. Under a simulated one-sun condition and a light incident angle of up to 60 degrees, cells with ZnO dandelions arrays enhanced the short-circuit current density by 31.87%. Consequently, ZnO dandelions are suitable for creating an omnidirectionally antireflective coating for photovoltaic devices.
URI: http://hdl.handle.net/11536/21961
http://dx.doi.org/10.1039/c3nr00526g
ISSN: 2040-3364
DOI: 10.1039/c3nr00526g
期刊: NANOSCALE
Volume: 5
Issue: 10
起始頁: 4270
結束頁: 4276
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