Morphological evolution of the poly(3-hexylthiophene)/[6,6]-phenyl-C 61-butyric acid methyl ester, oxidation of the silver electrode, and their influences on the performance of inverted polymer solar cells with a sol-gel derived zinc oxide electron selective layer
Journal
Thin Solid Films
Journal Volume
518
Journal Issue
17
Pages
4964-4969
Date Issued
2010
Author(s)
Liu, M.-Y. et al.
Chang, C.-H.
Chang, C.-H.
Tsai, K.-H.
Huang, J.-S.
Chou, C.-Y.
Wang, I.-J.
Wang, P.-S.
Lee, C.-Y.
Chao, C.-H.
Yeh, C.-L.
Abstract
The inverted polymer solar cell (PSC) based on a sol-gel derived zinc oxide (ZnO) thin film as an electron selective layer is investigated. The device performance is improved after the fabricated device is placed in air for a few days. The improvement is attributed to the self-organization of the poly(3-hexylthiophene)/[6,6]-phenyl-C61-butyric acid methyl ester layer and oxidation of the silver electrode with time, resulting in a significant enhancement in the short circuit current, fill factor and open circuit voltage. The investigation shows that the inverted PSC based on ZnO thin film exhibits a high efficiency of 3.8% on the 6th day after fabrication without the use of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) and encapsulation. © 2010 Elsevier B.V. All rights reserved.
SDGs
Type
journal article