TY - DATA T1 - Two Anthracene-Based Copolymers as the Hole-Transporting Materials for High-Performance Inverted (p-i-n) Perovskite Solar Cells PY - 2018/09/14 AU - Tong Tong AU - Chao Tan AU - Tina Keller AU - Bobo Li AU - Chaoyue Zheng AU - Ullrich Scherf AU - Deqing Gao AU - Wei Huang UR - https://acs.figshare.com/articles/journal_contribution/Two_Anthracene-Based_Copolymers_as_the_Hole-Transporting_Materials_for_High-Performance_Inverted_p-i-n_Perovskite_Solar_Cells/7088630 DO - 10.1021/acs.macromol.8b00919.s001 L4 - https://ndownloader.figshare.com/files/13034651 KW - copolymers KW - OC KW - power conversion efficiency KW - High Occupied Molecular Orbitals KW - thiophene-bridged carbazole-anthracene copolymer KW - PCBZANT KW - PCE KW - PTPAANT KW - eV KW - PEDOT KW - HTM KW - HOMO KW - hole carriers transfer KW - Perovskite Solar Cells KW - perovskite layer KW - SC KW - CH 3 NH 3 PbI 3 KW - thiophene-bridged triphenylamine-anthracene copolymer KW - device N2 - Two anthracene-based copolymers, the thiophene-bridged carbazole-anthracene copolymer (abbreviated as PCBZANT) and the thiophene-bridged triphenylamine-anthracene copolymer (abbreviated as PTPAANT), have been developed as the hole-transporting materials (HTMs) for the inverted perovskite solar cells. They were thermally stable with decomposition temperatures of 435 and 420 °C. The High Occupied Molecular Orbitals (HOMO) of −5.15 and −5.24 eV of two copolymers facilitated the hole carriers transfer from the perovskite layer (CH3NH3PbI3, HOMO: −5.4 eV) in contrast to poly­(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS, HOMO: −4.9 eV). The solar cell with PCBZANT (abbreviated as the PCBZANT device) showed the highest power conversion efficiency (PCE) of 15.50%, while the cell with PTPAANT (abbreviated as the PTPAANT device) showed the highest PCE of 14.52%, with increases of 36.2% and 27.6%, respectively, relative to the PEDOT:PSS device. The thorough analysis disclosed that the high performance was mainly ascribed to the enhanced open-circuit voltage (VOC) and short-circuit current density (JSC), being contributed from the efficient hole-carrier extraction, the high hole mobility of two copolymers, and the high-quality perovskite film with large crystal size and less defect. With strong absorption in the range of 350–500 nm, the polymers decreased the destruction of UV-radiation on the perovskite layer as UV-filters and improved the stability of the inverted cells. ER -