Eliminated the Internal Stress in Molybdenum Oxides by Ultraviolet-Ozone Treatment and its Application to Organic Solar Cell

Abstract:

A simple and efficient method has been developed to eliminate the internal stress in molybdenum oxides by an ultraviolet ozone treatment. The results of X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and Raman spectroscopy indicate that oxygen vacancy was a determining factor of the compressive stress in MoO₃, which can be released by ultraviolet ozone treatment. Based on this hole-transporting layer, the photovoltaic power conversion efficiency up to 3.91% was achieved, which is 22% higher than that without ultraviolet ozone treatment. And ultraviolet ozone treatment on MoO₃ is a useful method to embellish the interface to enhance the ability of collecting hole of hole-transporting layer to improve the performance of OSC with MoO₃ film as hole-transporting layer.

• Periodical: Materials Science Forum (Volume 847)
• Pages: 109-116
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.847.109
• Online since: March 2016
• Authors: Ping Li Qin*, Guo Jia Fang, Qin He, Wei Jun Ke, Hong Wei Lei, Qin Liu, Guang Yang, Xing Zhong Zhao
• Keywords: Hole-Transporting Layers, Internal Stress, MoO₃, Organic Solar Cell, Ultraviolet Ozone Treatment

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