UV-Ozone Treatment on Cs2CO3 Interfacial Layer for the Improvement of Inverted Polymer Solar Cells. (18th February 2013)

• Record Type: Journal Article
• Authors: Xin, Yusheng; Wang, Zixuan; Xu, Lu; Xu, Xiaowei; Liu, Yang; Zhang, Fujun
• Other Names: Wei Jian Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2013(2013)
• Publication Date: 2013-02-18
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2013/104825
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Inverted configuration polymer solar cells (IPSCs) were prepared by using Cs2 CO3 modified indium tin oxide (ITO) substrates as cathode and MoO3 /Al as anode, ITO/Cs2 CO3 /P3HT:PCBM/MoO3 /Al. The interfacial Cs2 CO3 layers were conducted with annealing treatment and different time UV-Ozone treatment. The power conversion efficiency (PCE) of IPSCs was improved to 1% when the UV-Ozone treatment time is 15 minutes, with the open-circuit voltage of 0.48 V, short-circuit current density of 5.4 mA/cm 2, and fill factor of 39%. The improvement of IPSCs should be attributed to the increased electron transporting and collection ability of Cs2 CO3 layer induced by UV-Ozone treatment. The underlying mechanism of PCE improvement was discussed in terms of series and shunt resistance of cells induced by UV-Ozone treatment on Cs2 CO3 layer, and the mole ratio of Cs to O of Cs2 CO3 layer with different UV-Ozone treatment was investigated by scanning electron microscopy operating in the mode for in situ energy dispersive X-ray (EDX) spectra.