Publications by authors named "Rory Campagna"
ACS Energy Lett
September 2024
Article Synopsis
- Halide perovskites are promising materials for optoelectronic devices, particularly photovoltaics, but they face stability issues, specifically a tendency to change from their perovskite structure to a more stable nonperovskite form.
- The study focuses on the phase transition of CsPbI, identifying a significant decrease in the transition rate when the material is surface-treated with CsI and CdI compared to untreated films.
- Surface chemistry analysis via XPS reveals that surface iodide concentration influences this transition rate, suggesting that vacancies in surface iodide are crucial for the growth of the nonperovskite phase, highlighting that phase nucleation is a critical factor in the stability of CsPbI thin films.
