Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO24)
Publication date: 25th April 2024
Perovskite solar cells currently face challenges in terms of stability within their existing architecture. The commonly used hole transfer materials in inverted perovskite solar cells typically consist of organic compounds such as PTAA and SAM [1]. In our research, we have developed a new treatment procedure for NiO, a promising inorganic hole transfer material, which significantly improves the stability of perovskite solar cells. Our findings demonstrate the exceptional long-term aging performance of doped NiO with an insignificant loss of less than one percent over 3000 hours.
To investigate the underlying factors responsible for the observed stability enhancement, we conducted a comprehensive analysis employing various measurements, including Kelvin Probe (KP), Ultraviolet Photoelectron Spectroscopy (UPS), Atomic Force Microscopy (AFM), Time-Resolved Surface Photovoltage (TRSPV), and Time-Resolved Photoluminescence (TRPL).
Through our study, we have successfully demonstrated that our new treatment method for NiO facilitates improved hole extraction and mitigates the accumulation of free charges within perovskite solar cells. The boosted stability is primarily attributed to the optimized properties of NiO as a result of our treatment procedure.
In conclusion, our research presents a significant advancement in perovskite solar cells by introducing a novel treatment method for nickel oxide. The achieved stability enhancement through this method offers promising prospects for the commercial viability of perovskite solar cells.
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