Work

Enhanced Stability and Efficiency in Ge–Pb‐Based Perovskite Solar Cells through PCCMAI ‐Induced Ge Defect Passivation

Year: 2025

Type: article

Abstract: The advantages of the Ge–Pb‐based perovskite solar cells (PSCs), such as low bandgap, have made this kind of PSC popular nowadays. Nevertheless, they have adverse properties that need to be fixed, such as short lifetime and fast crystallization process, which causes Ge defects. In this research, the passivation of Ge defects by using pyridinium chlorochromate methylamine iodine (PCCMAI) in the perovskite film (PF) structure is investigated. By using PCCMAI, the PSC's performance enhancement and surface morphology optimization were observed. It is determined that by the reaction of PCCMAI in the perovskite solvent, a coordination polydentate is formed in Ge–Pb mixed perovskite, and it results in the improvement of crystallization quality and electron transfer. After PCCMAI treatment of the Ge–Pb‐based perovskite film, the measured power conversion efficiency (PCE) indicates that the performance of the fabricated PSC increased from 16.85% to 20.14%. Moreover, fabricated PSCs show an increment in stability after PCCMAI treatment.

Source: Energy & environment materials

DOI: 10.1002/eem2.70052

Authors: Shahriar Mohammadi, L. Jan Anton Koster, Sakineh Akbari Nia

Institutions: Institute for Advanced Studies in Basic Sciences, University of Groningen, Zernike Institute for Advanced Materials, Silesian University of Technology

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: $3,000