Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
Publication date: 23rd October 2018
Development of lead-free perovskites is an important task because of the environmental and economical advantages. However, tin-based perovskite, one of the most plausible candidates, suffers significant oxidation from Sn(II) to Sn(IV)[1], which strictly limits the power conversion efficiency (PCE) and stability. On the other hand, there are some reports of bismuth and antimony-based materials as the next lead-free perovskites with PCE 3—7%.
Although several material designs of bismuth and antimony-based materials such as A3Bi2X9, A2AgBiX6, and ASbSI2 are reported, the most promising material has remained unknown . In this work, we performed systematic exploration of these materials by using ultrafast screening technique: time-resolved microwave conductivity (TRMC)[2]. From TRMC measurement, charge carrier mobility, lifetime, and transfer yield to electron/hole transport layer (ETL/HTL) are obtained, which are key parameters of photovoltaics. Photoelectron yield spectroscopy (PYS) and other fundamental studies have been also conducted to investigate their electrochemical properties. Based on these results, we found that ASbSI2 (A = Cs, CH3NH3) is a potentially high-performing material because of efficient charge transfer to ETL/HTL and moderate valence band maxima (−5.5 eV). Although the obtained PCE of ASbSI2 device was still low (0.92%), it was much higher than our reference A3Sb2I9 cell (~0.10%). Our work provides a new prospect for the next-generation lead-free perovskites.
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.