Abstract
A low‐cost carbon cloth is applied in perovskite solar cells (PSC) as a collector composite and degradation inhibitor. This study incorporates carbon fibers as a back contact in perovskite solar cells, which results in enhancement in all photovoltaic parameters. This material is suitable for large‐scale fabrication of PSCs as it has shown an improved long‐term stability when compared to the gold counterpart under elevated temperatures.