Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP24)
Publication date: 18th October 2023
Perovskite solar cells (PSCs) have attracted much attention because of the fast progress of their power conversion efficiency (PCE) has reached from an initial 3.8% to 26.1% within 14 years.1 The highly efficient perovskite solar cells mostly utilize the SnO2 electron transport layer (ETL) because of its excellent optical and electrical properties.2,3 However, high conduction band offset (CBO) at SnO2/perovskite interface and high oxygen vacancy on the SnO2 surface cause the open circuit voltage (VOC) loss due to the higher recombination velocity at the SnO2/perovskite interface.4,5 From the theoretical analysis, Duan et al. showed that the conduction band (CB) of the SnO2 can be shifted to upward energy level with the p-type doping.6 In this research, we introduced a rare earth cation into SnO2 as a p-type dopant to overcome the limitations of the SnO2 ETL in the practical PSCs. From the X-ray photoelectron spectroscopy (XPS) analysis, it was found that the oxygen vacancy on the SnO2 surface was reduced after introduction of doping element. We confirmed the reduction of CBO at SnO2/perovskite interface from the ultraviolet photoelectron spectroscopy (UPS) and optical measurements. As a result, the doped SnO2 ETL in PSCs enhanced the VOC by around 100 mV compared to the pristine SnO2 ETL. Finally, we observed the PCE of 21.02% from the doped SnO2 ETL-based PSCs with high stability, while pristine SnO2 ETL-based PSCs showed a PCE of 19.25%.
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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.