Porphyrin‐Based Simple and Practical Dopant‐Free Hole‐Transporting Materials for Efficient Perovskite Solar Cells Using TiO2 Semiconductors. Issue 9 (6th July 2020)

• Record Type: Journal Article
• Authors: Chou, Hsien-Hsin; Chiang, Yu-Hsien; Chen, Yu-Hsuan; Guo, Chen-Jing; Zuo, Hong-Yi; Cheng, Wei-Ting; Lin, Pei-Ying; Chiu, Yueh-Ya; Chen, Peter; Yeh, Chen-Yu
• Is Part Of: Solar RRL. Volume 4:Issue 9(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-06
• Subjects: dopant-free perovskite solar cells -- hole transporting materials -- perovskites -- porphyrins -- solar cells; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.202000119
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : A new series of structurally simple and easily accessible hole‐transporting materials (HTMs) YZT1–YZT4 using porphyrin backbone is devised for high‐performance perovskite solar cells (PSCs) with and without the aid of doping. The YZT‐series HTMs have either push–push or push–pull type planar linear molecular geometry with substitution of linear or branched alkylamine. UV–vis absorption, photoluminance (PL) quenching experiments, and theoretical studies all suggest a different pattern of molecular packing induced by molecular geometry and/or substituted chains. Nonetheless, both types of porphyrin HTMs perform well in TiO2 ‐based PSCs when doped YZT4 with a power conversion efficiency (PCE) of 14.95% and undoped YZT1 with a PCE of 13.10%. The results clearly reveal the potential for porphyrin‐based HTMs for use in dopant‐free PSCs. Abstract : A new series of dopant‐free hole‐transporting materials (HTMs) YZT1–YZT4 featuring porphyrin backbone is achieved in which the best power conversion efficiency (PCE) of YZT4 is 14.95% for doped and that of YZT1 is 13.10% for dopant‐free perovskite solar cells (PSCs) based on TiO2 semiconductors.