Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.057
Publication date: 30th March 2023
Recently, perovskite solar cells have become the latest research field among various new generation photovoltaic technologies due to their high performance and potentially low-cost production. The power conversion efficiency has already reached over 25% in 2020 much beyond another solar cells such as CIGS or amorphous Si. The further performance still looks promising toward the Shockley–Queisser limit at around 30%. For that purpose, physical chemistry understanding based on the crystallography must be essential to design the good light harvesting, good charge separation and good charge transfer.
Recently we reported the scientific revelation that the crystal phase of thin film CH3NH3PbI3 consists of the mixture of tetragonal phase and cubic phase. Moreover, bold zebra pattern with d-spacing with 14.2Å (2θ=6.22° for CuKα by XRD) was clearly observed by high resolution TEM with FIB processing that consists with tetragonal and cubic phase superlattice. The typical high magnification In the TEM observation characteristic identity of perovskite can be seen as (1) Phase coexistence (2) Superlattice (3) Nano size domain (10~20nm).
To make more high performance as a solar cell, the crystal phase control with liquid nitrogen quenching just after the hot plate heating was newly examined. The resulting cell performance was impressive, about 2% more than that without Liq. N2 treatment. Details on TEM observations are also provided for such procedures.
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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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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.