title: Improving efficiency by hybrid TiO(2) nanorods with 1,10-phenanthroline as a cathode buffer layer for inverted organic solar cells.
abstract: We reported a significant improvement in the efficiency of organic solar cells by introducing hybrid TiO2:1,10-phenanthroline as a cathode buffer layer. The devices based on polymer thieno[3,4-b]thiophene/benzodithiophene:[6,6]-phenyl C71-butyric acid methyl ester (PTB7:PC71BM) with hybrid buffer layer exhibited an average power conversion efficiency (PCE) as high as 8.02%, accounting for 20.8% enhancement compared with the TiO2 based devices. The cathode modification function of this hybrid material could also be extended to the poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PC61BM) system. We anticipate that this study will stimulate further research on hybrid materials to achieve more efficient charge collection and device performance.
authors.affiliation: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , Ningbo, 315201, China.
authors.forename: Chunming
authors.initials: C
authors.lastname: Sun
authors.forename: Yulei
authors.initials: Y
authors.lastname: Wu
authors.forename: Wenjun
authors.initials: W
authors.lastname: Zhang
authors.forename: Nianquan
authors.initials: N
authors.lastname: Jiang
authors.forename: Tonggang
authors.initials: T
authors.lastname: Jiu
authors.forename: Junfeng
authors.initials: J
authors.lastname: Fang