TITLE:
Effects of Annealing Conditions on ZnO Buffer Layer for Inverted Polymer Solar Cells
AUTHORS:
Chuan Liu, Lihua Zheng, Zhiyang Gao, Yuhui Gan, Jian Zhang, Chuannan Li
KEYWORDS:
Polymer Solar Cells (PSCs); Zinc Oxide; Buffer Layer; Annealing; Morphology
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
22,
2013
ABSTRACT: A solution-processed zinc oxide (ZnO) thin film as the
buffer layer with optimized processes especially the annealing conditions for
inverted polymer solar cells (PSCs) has been demonstrated. Firstly the
thickness of ZnO buffer layer was optimized, and different annealing conditions
including temperature and time have also been taken into consideration. And the
best Power Conversion Efficiency (PCE) 3.434% was observed when the ZnO buffer
layer was spin–coated at 1500 rpm and annealed at 275℃ for 5 min, and AFM results showed that morphology of this ZnO film
has the best uniformity which was beneficial to form high quality polymer
composite active layer.