Exploring Photo-functional Perovskite Interfaces for Breakthroughs in Photo-electric Conversion
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- Principal Investigator
Professor / Yasuhiro YAMADA
- Affiliation
Graduate School of Science, Chiba University
Researchmap
- Principal Investigator
Halide perovskites are emerging semiconductors that have garnered significant attention as next-generation photoconversion materials for solar cells and light-emitting device applications due to their unique optical and electronic properties. Additionally, Japan, particularly Chiba Prefecture, is rich in iodine, a key element in perovskites, which makes the development of perovskite-based technologies highly anticipated. Our research focuses on one of the unique properties of perovskites—the upconversion process.
Upconversion is a process where low-energy photons or electronic states are converted into higher-energy states, a phenomenon that occurs under specific conditions in certain materials. Perovskites are especially promising due to their strong electron-phonon interactions, which contribute to their ability to exhibit strong upconversion photoluminescence. A deep understanding and precise control of the upconversion process could lead to substantial improvements in the efficiency of solar cells and light-emitting devices. Furthermore, it opens up possibilities for the development of groundbreaking technologies, such as optical cooling devices.
Our research aims to achieve highly efficient upconversion by utilizing heterointerfaces between perovskites and other materials. Using state-of-the-art laser spectroscopy techniques; we intend to unravel the underlying physical processes driving upconversion and clarify the potential and limitations of photoconversion mechanisms based on these findings. The insights gained from this fundamental research will be directly applied to the fabrication of functional devices.
Our approach integrates organic electronics and semiconductor physics, with optical science as the foundation, to explore the hybrid nature of perovskites. We will construct interfaces between perovskites and organic semiconductors or between different types of perovskites. This interdisciplinary collaboration, combining expertise from both physics and engineering, is key to overcoming the traditional limitations of existing technologies and achieving meaningful breakthroughs.
