Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
Publication date: 20th April 2022
In perovskite solar cells (PSCs), trap states are considered one of the main factors limiting the device performance (e.g., open-circuit voltage and short-circuit current) as they reduce the mobility of photogenerated carriers and cause trap-assisted recombination [1]. In such a case, trap passivation becomes a popular method to boost device performance, and reports show that passivating surface traps of perovskite become more effective than passivating their bulk traps. Material scientists attribute the better effect of surface passivation to the significant reduction of trap density in perovskites since the majority amount of traps state are considered located at the perovskite surface. We report a pump-push photocurrent spectroscopy study, which is able to trace the dynamics of trapped carriers using a delayed infrared push pulse to bring carriers from defect states to the conduction band. We found that the trapping time as well as recombination time for trapped states are dominan t factors towards the device performance of PSCs[2]. Via investigating the lifetime of FAPI solar cells with and without surface passivation, we observed that carriers in surface traps recombine much faster than that in bulk traps, illustrating that surface defects have a much higher possibility to re-trap carriers generated under continuous light illumination. With such a clearer understanding of the trapped carrier dynamics, we anticipate our assay to be another starting point for material scientists to further improve existing PSC performance.
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.