| Title | Effects of heteroatom substitution in spiro-bifluorene hole transport materials |
| Authors | Hu, Zhao Fu, Weifei Yan, Lijia Miao, Jingsheng Yu, Hongtao He, Yaowu Goto, Osamu Meng, Hong Chen, Hongzheng Huang, Wei |
| Affiliation | Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China. Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China. Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect, 30 South Puzhu Rd, Nan Jing, Peoples R China. Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Inst Adv Mat, 30 South Puzhu Rd, Nan Jing, Peoples R China. Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen 518055, Peoples R China. Chen, HZ (reprint author), Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China. Meng, H Huang, W (reprint author), Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect, 30 South Puzhu Rd, Nan Jing, Peoples R China. Meng, H Huang, W (reprint author), Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Inst Adv Mat, 30 South Puzhu Rd, Nan Jing, Peoples R China. |
| Keywords | PEROVSKITE SOLAR-CELLS ORGANOMETAL HALIDE PEROVSKITES PERFORMANCE EFFICIENCY FILMS DEPOSITION COMPOUND ELECTRON DOPANT LAYERS |
| Issue Date | 2016 |
| Publisher | CHEMICAL SCIENCE |
| Citation | CHEMICAL SCIENCE.2016,7(8),5007-5012. |
| Abstract | Three new spirofluorene-based hole transport materials, Spiro-S, Spiro-N, and Spiro-E, are synthesized by replacing the para-methoxy substituent in 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (Spiro-MeOTAD) with methylsulfanyl, N,N-dimethylamino and ethyl groups. Their properties as hole transport materials in perovskite solar cells are investigated. The impact of replacing the para-methoxy substituent on bulk properties, such as the photophysical properties, HOMO/LUMO energy level, hole extraction properties and morphologies of perovskite thin films are investigated. Their optoelectronic and charge-transport properties and performance in perovskite solar cells are compared with the current benchmarked and structurally-related hole transport material (HTM) Spiro-MeOTAD. Surprisingly, the methylsulfanyl substituted spirofluorene shows the highest power conversion efficiency of 15.92% among the investigated spirofluorenes, which is an over 38% increase in PCE compared with that of Spiro-MeOTAD under similar device fabrication conditions. |
| URI | http://hdl.handle.net/20.500.11897/492466 |
| ISSN | 2041-6520 |
| DOI | 10.1039/c6sc00973e |
| Indexed | SCI(E) EI |
| Appears in Collections: | 新材料学院 |
