Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
DOI: https://doi.org/10.29363/nanoge.iperop.2019.016
Publication date: 23rd October 2018
Since our start of the photovoltaic cell using organo lead halide perovskites in 2005,1 cell performance recorded a rapid boost in efficiency that has been never experienced by other photovoltaic semiconductors. Although power conversion efficiency (PCE) achieved high value (23.3%), to reap the benefit of low cost perovskite photovoltaic devices is to establish an ambient air-based fabrication of a high performance and stable device by a simple solution process without use of dry oxygen-free chamber and high temperature treatments. We have established ambient atmosphere solution processes to fabricate glass-based triple cation perovskite solar cells (PCE>21%)2 and plastic-film based perovskite solar cells (PCE 18%) both of which maintain good performance under weak incident light (1 mA/cm2). However, a drawback of perovskite device is due to use of thermally unstable hole transporter such as spiro-OMeTAD. To improve this P3HT is one of thermally stable materials. In our collaboration with JAXA, P3HT-based perovskite devices showed high durability by exposure to impacts of high (100oC) and low (-80oC) temperatures and high tolerance to large fluence proton and electron radiations, which is rare advantage of defect tolerant nature of thin film perovskite absorbers.3 We could improve the performance of highly durable P3HT perovskite solar cells to have efficiency above 15% by modifying the quality of P3HT film to have moisture-resistant surface. To reduce the process cost, low temperature coating of metal oxide electron collectors have been extensively studied in our group. This method was applied to the use of MA-free perovskite composition (CsFAPbI3, CsPbI3, etc.)4 that have high thermal stability. Direction of such challenges is to realize a perovskite photovoltaic device that has benefits of low cost, high performance, and high thermal and anti-moisture durability in practical use. The on-going studies on perovskite photovoltaics in our group will be summarized in the talk.
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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.
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.