Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)
Publication date: 14th October 2019
Development of hole transport materials (HTMs) with chemical and thermal stability and high hole mobility is still one of the challenges to improve the device stability and power conversion efficiency for perovskite solar cells (PSCs). Instead of the organic semiconductors such as spiro-OMeTAD and PTAA, inorganic semiconductors as HTMs were developed due to their high chemical and thermal stability and high hole mobility. Despite of these advantages of inorganic HTMs, the inorganic HTMs in n-i-p structured PSCs were limited. In this presentation, we developed surface-modified NiOx nanoparticles as HTMs in n-i-p structured PSCs.[1] The well-dispersed NiOx dispersion in chlorobenzene with a hexanoic acid as a surfactant was prepared. A high-quality NiOx thin film was deposited on top of the perovskite layer by spin-coating of the NiOx dispersion. The modified NiOx film has superior conductivity (1.20 x 10-5 S cm-2) than that of doped spiro-OMeTAD, which has a potential for efficient HTMs in PSCs. The modified NiOx film shows better hole extraction properties than the pristine NiOx film. The modified NiOx nanoparticles formed closely packed and pinhole-free films, resulting in improvement of the device performance with a power conversion efficiency from 5.5% to13.1%. We propose that the surface modification is applicable to the development of charge transport materials based on metal oxide nanoparticles in PSCs.
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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.
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