P-TYPE SENSITIZED ORGANIC SOLAR CELL WITH CASCADE ENERGY ALIGNMENT

摘要：

When the single layer C60 device with the structure of indium tin oxide (ITO) /N,N-Di-(1-naphthyl)N,N-diphenyl-1,1-biphenyl)-4,4-diamine (NPB)/fullerene(C6o)/tris-(8-hydroxyquinoline) aluminum (Alq3)/ aluminum (Al) is treated as a p-type sensitized solar cell, some methods for improving charge transportation and suppressing charge backflow in dye-sensitized solar cells can be applied to increase the performance of Ceo device. In this study, a 5 nm layer of molybdenum oxide (MoO3) is inserted between ITO and NPB to realize this idea. This thin layer with higher mobility and higher dielectric constant than NPB forms a cascade energy alignment with NPB, improving hole injection from C60 into NPB and hole transportation from NPB to ITO. The power conversion efficiency of single layer C60 device with M0O3 is enhanced to 0.976 ％, which is 3.92 times that of the device without MoO3. When MoO3 is replaced by copper phthalocyanine or rubrene, which has higher mobility than NPB and forms cascade energy structure with NPB, the power conversion efficiency of single layer C60 devices is improved to 0.539 ％ and 0.529 ％ respectively, which is 2.16 times and 2.12 times that of devices without such treatments.

关键词： p-type sensitized solar cells C60 MoO3/NPB cascade energy alignment

作者: Junhua Huang Lijia Chen Fu He Ting Zhang Guoxi Niu Jing Pan Qunliang Song

作者单位: Institute for Clean Energy & Advanced Materials and School of Physical Science & Technology, Southwest University, Chongqing 400715, PR China

会议类型: 国际会议

会议名称: The 7th International Green Energy Conference & The 1st DNL Conference on Clean Energy(第七届绿色能源国际会议暨第一届DNL洁净能源会议(IGEC)

会议地点: 大连

会议语种:英文

页码: 53

在线出版日期: 2012-05-28（万方平台首次上网日期，不代表论文的发表时间）