Work

Charge carrier dynamics controlling performance of lead-based halide perovskite solar cells

Year: 2025

Type: article

Abstract: We review our studies to assess charge carrier dynamics inside a perovskite film and interfacial charge transfer dynamics for a perovskite layer sandwiched by an electron transporting layer (ETL) such as TiO2 compact or mesoporous layer and a hole transporting layer (HTL) such as spiro-OMeTAD. Both electron and hole injection occur faster than electron-hole recombination inside a perovskite film, however, both change injection yields decrease with an increase in excitation intensity. Since the electron mobility inside methylammonium lead iodide (MAPbI3) perovskite is lower than the hole mobility, employing a mesoporous ETL structure is suitable to maximise the electron injection yield. Interfacial charge recombination lifetime increases with an increase in perovskite film thickness. We therefore conclude that for p-type MAPbI3 solar cells, the perovskite film thickness should be increased to the hole diffusion length, while the mesoporous ETL structure should be employed to maximise the electron injection yield.

Source: Japanese Journal of Applied Physics

DOI: 10.35848/1347-4065/adcef3

Authors: Chathurika Maduwanthi, Maning Liu, Yasuhiro Tachibana

Institutions: RMIT University, Lund University, The University of Osaka

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $2,210