Lengthening the polymer solidification time to improve the performance of polymer/ZnO nanorod hybrid solar cells

Lengthening the polymer solidification time in the inverted configuration of polymer/ZnO nanorod hybrid solar cells is studied as a way to improve device performance. As the polymer solidification time is lengthened by lowering the spin-coating rate of the photoactive layer, the photoactive layer be...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2009-09, Vol.93 (9), p.1608-1612
Main Authors: Chou, Chen-Yu, Huang, Jing-Shun, Wu, Chung-Hao, Lee, Chun-Yu, Lin, Ching-Fuh
Format: Article
Language:English
Subjects:
400 nm active layer
Applied sciences
Energy
Exact sciences and technology
Hybrid solar cells
Natural energy
Photovoltaic conversion
Polymer
Slow drying
Solar cells. Photoelectrochemical cells
Solar energy
ZnO nanorod
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Summary:Lengthening the polymer solidification time in the inverted configuration of polymer/ZnO nanorod hybrid solar cells is studied as a way to improve device performance. As the polymer solidification time is lengthened by lowering the spin-coating rate of the photoactive layer, the photoactive layer becomes thickened, and the polymer chains have enough time to self-organize and effectively infiltrate into ZnO nanorod spacing. While the thickness of the photoactive layer is increased to 400 nm accompanying self-organized polymer, the power conversion efficiency of the device is improved to 3.58% with an enhanced fill factor of 58%. The 400 nm film is composed of the highly ordered polymer and the ZnO nanorod arrays, resulting in light harvesting without decreasing the possibility for charge transport.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2009.04.016