Publication date: 5th November 2025
Perovskite solar cells (PSCs) have emerged as promising candidates for next-generation ultra-light photovoltaic technologies due to their bendable perovskite layers, enabling film-type solar cells.[1] Their fabrication through solution-based coating and printing of electron/hole transport layers and organic-metal-halide perovskites offers the potential for low-cost production. PSCs have achieved power conversion efficiencies exceeding 20% in small-area devices (~1 cm²), positioning them as high-efficiency, low-cost alternatives to conventional solar cells.
To realize the commercialization of PSCs, it is essential to overcome challenges related to long-term durability under environmental stressors such as heat, moisture, and light, as well as to establish scalable manufacturing processes. At AIST, we are developing robust materials and interface technologies to mitigate degradation, alongside advanced evaluation methodologies for optimizing layer thickness and band alignment. [2-10] One critical issue is the reduced thermal stability caused by dopants in hole transport materials (HTMs). To address this, we synthesized novel dopant-free organic HTMs, achieving over 1000 hours of operational stability at 85 °C. In parallel, we explored alternative dopants such as phenyl ethyl ammonium (PEA)-TFSI, which maintained high efficiency under thermal stress. To combat moisture-induced degradation, we introduced 1,4-phenyl bisphosphonic acid (PBPA) as an additive in the perovskite layer, significantly enhancing moisture resistance.
For acceleration of material screening and device optimization, we developed a fully automated PSC fabrication system capable of full-layer coating, back electrode deposition, and laser scribing. This presentation will provide a comprehensive overview of our research and development efforts at AIST, aimed at enabling the practical deployment of perovskite solar cell technologies.
We would like to thank NEDO for supporting R&D of perovskite solar cells as the Green Innovation Funding Projects for (JPNP21016).
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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