In:
Solar RRL, Wiley, Vol. 4, No. 9 ( 2020-09)
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 TiO 2 ‐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.
Type of Medium:
Online Resource
ISSN:
2367-198X
,
2367-198X
DOI:
10.1002/solr.202000119
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
2882014-9