Lengthening the polymer solidification time to improve the performance of polymer/ZnO nanorod hybrid solar cells
Journal
Solar Energy Materials and Solar Cells
Journal Volume
93
Journal Issue
9
Pages
1608-1612
Date Issued
2009
Author(s)
Abstract
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. © 2009 Elsevier B.V. All rights reserved.
Subjects
400 nm active layer; Hybrid solar cells; Polymer; Slow drying; ZnO nanorod
SDGs
Other Subjects
400 nm active layer; Charge transport; Device performance; Fill factor; Hybrid solar cells; Light-harvesting; Ordered polymers; Photoactive layers; Polymer chains; Power conversion efficiencies; Self-organize; Self-organized; Slow drying; Solidification time; ZnO nanorod; ZnO nanorod arrays; Cell membranes; Conversion efficiency; Crystallization; Dewatering; Nanorods; Photovoltaic cells; Semiconducting zinc compounds; Solar cells; Solar energy; Solidification; Zinc oxide; Polymers
Type
journal article