Open Circuit Voltage Enhancement and Defect Suppression of Wide-Bandgap CsPbIBr <sub>2</sub> Perovskite Solar Cells by Phenylhydrazinium Chloride Incorporation
Wide-bandgap (WBG) perovskite solar cells possess huge potential for integration into next-generation heterojunction photovoltaic systems. Conversely, their well-known commercialization is presently hindered by several challenges, including considerable open circuit voltage losses and poor long-term stability. Here, we report phenylhydrazinium chloride (PCl) as an effective dopant in WBG CsPbIBr<sub>2</sub> perovskite solar cells, which inhibits halide oxidation and demixing in addition to decreasing defect density, leading to highly crystalline perovskite films. As a result of lower defects, PSCs obtained by PCl WBG CsPbIBr<sub>2</sub> achieved a PCE of 10.83%, possessing a <i>V</i> <sub>oc</sub> of 1.24 and an enhanced stability of more than 300 h. This work may deliver a viable solution toward the fabrication of WBG CsPbIBr<sub>2</sub> PSCs sub-cells for tandem solar cells.
Authors
- K. Harrabi (ORCID: https://orcid.org/0000-0002-8865-0504)
- A. Mekki
- Waqas Siddique Subhani
- Menouer Saidani
- Feichi Zhou
- Nabeel Aslam
- Abdulaziz Aljalal
Institutions
- King Fahd University of Petroleum and Minerals (SA)
- Southern University of Science and Technology (CN)
- Department of Physics, Mathematics and Informatics (BY)
- Center For Remote Sensing (United States) (US)
- Centre of Excellence for Advanced Materials (CN)
- Advanced Energy Materials (United States) (US)
- Integrated Sensing Systems (United States) (US)
- Computing Center (RU)
- IMS Nanofabrication (Austria) (AT)
- King Abdullah University of Science and Technology (SA)
Publication Details
- Journal
- ACS Omega
- Published
- 2026-02-04
- DOI
- https://doi.org/10.1021/acsomega.5c11624
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00