Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.414
Publication date: 18th December 2023
Organic-inorganic hybrid perovskites (OIHPs) are a fascinating class of semiconductors that can be low-temperature synthesized, crystallized and processed on a large variety of substrates, and at the same time offering outstanding optical and electronic properties, such as broadband spectral tunability, high defect tolerance, high absorption/emission efficiency, room-temperature excitons, etc. These advantages allow OIHPs to complement conventional inorganic semiconductors (e.g., Si and GaAs) in photonics applications that require low-cost, large active area, wide spectral or polarization tunability or flexibility in substrate selection. In this talk I will talk about two OIHP-based photonic devices – photodetector and optically pumped laser. First, I will focus on the commonly seen gain – bandwidth trade-off problem of photodetectors and introduce a monolithically integrated photovoltaic transistor (PVT) design to solve this dilemma. The PVT exploiting a lead halide perovskite as the photoactive layer achieved a record high gain – bandwidth product of ~ 1011. Secondly, I will talk about our recent exploration of using quasi-two-dimensional Dion-Jacobson (DJ) phase perovskites for laser application. With properly selected organic spacers, DJ phase OIHPs offer excellent chemical resistance and thermal processability. These properties allow us to achieve optically pumped perovskite lasers with record-high quality factor, record-low lasing threshold and excellent operational stability.
The studies presented here were supported by the Excellent Young Scientists Fund from National Natural Science Foundation of China (62022004) and General Research Fund from Hong Kong Research Grants Council (14207221 and 14209620).
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.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.