Photoinduced Self-Gating of Perovskite Photovoltaic Cells in Ionic Liquid.

ABSTRACT: We demonstrate that the power conversion efficiency (PCE), photocurrent, and fill factor (FF) of perovskite solar cells (PSC) can be significantly improved by the photoinduced self-gating in ionic liquids (ILs) via n-doping of the carbon nanotube (CNT) top electrode on the fullerene electron transport layer (ETL). CNTs, graphene, and other carbon electrodes have been proven to be stable electrodes for PSC, but efficiency was not high. We have previously shown that the performance of PSCs with CNT electrodes can be improved by IL gating with gate voltage (V_g) applied from an external power source. Here we demonstrate that effective self-gating in ILs is possible by a photoinduced process, without an external source. The open circuit voltage (V_oc) generate

SUBMITTER: Verkhogliadov G 

PROVIDER: S-EPMC10347686 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature