Diethanolamine Modified Perovskite-Substrate Interface for Realizing Efficient ESL-Free PSCs.

ABSTRACT: Simplifying device layout, particularly avoiding the complex fabrication steps and multiple high-temperature treatment requirements for electron-selective layers (ESLs) have made ESL-free perovskite solar cells (PSCs) attractive. However, the poor perovskite/substrate interface and inadequate quality of solution-processed perovskite thin films induce inefficient interfacial-charge extraction, limiting the power conversion efficiency (PCEs) of ESL-free PSCs. A highly compact and homogenous perovskite thin film with large grains was formed here by inserting an interfacial monolayer of diethanolamine (DEA) molecules between the perovskite and ITO substrate. In addition, the DEA created a favorable dipole layer at the interface of perovskite and ITO substrate by molecular adsorption, which sup

SUBMITTER: Sajid S 

PROVIDER: S-EPMC9865489 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature