121st General Meeting of the KCS

Type Poster Presentation
Area Environmental Energy
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ENVR.P-668
Subject Molecular Energy Control of Poly(triarylamine) for Improved Efficiency of Perovskite Solar Cells Based on Enhanced Open-Circuit Voltage
Authors Eui Hyuk Jung
Korea Research Institute of Chemical Technology, Korea
Abstract The energy level alignment of a perovskite material and hole transporting material (HTM) is crucial requirement for increasing open-circuit voltage (Voc) and performance of perovskite solar cells (PSCs). In this work, we develop new poly(triarylamine)s (PTAAs) with tuned highest occupied molecular orbital (HOMO) energy levels and applied them as hole transporting layer into PSCs. Our approach successfully dereases the highest occupied molecular orbital (HOMO) energy levels of PTAA derivatives from -5.14 eV to -5.63 eV, thus resulting in significant increase of Voc and power conversion efficiency (PCE) of PSCs. In particular, the use of PTAA derivate (P2) with HOMO energy levels of -5.52 eV in (FAPbI3)0.85(MAPbBr3)0.15-based mesoporous n-i-p structure PSCs produced the optimized PCE value of 22.1% with significantly improved Voc of 1.14 V.
E-mail jworld06@gmail.com