Proceedings of Perovskite Thin Film Photovoltaics (ABXPV17)
Publication date: 18th December 2016
In inorganic semiconductor junction devices, capacitance spectroscopy is one of the most fundamental means to uncover the defect states and the doping concentrations. Of course, it has been already applied to perovskite photovoltaic (PKPV) devices as well, providing the energy levels and densities of the trap states. However, the technique has not been fully utilized to enhance the understanding of the PKPV operation. For example, a comparative study of the information on the defect states and the power conversion efficiency is still lacking.
The formulation of the capacitance spectroscopy is well developed and should be readily applicable to planar type PKPVs. We have been successful in preparing simple planar type PKPVs, which are free of hysteresis and have diode characteristics quantitatively comparable with those of GaAs p-i-n junctions. We applied the capacitance spectroscopy to our samples prepared under systematically varied conditions, e.g., samples prepared in different procedures or samples at different stages of degradation. It was found that the efficiency is related to the bulk defect conditions while the degradation leaves stronger signature at the perovskite/charge-extraction layer interface. Numerical simulations using SCAPS (Solar Cell Capacitance Simulator) were performed assuming defect states in the bulk or at the interface. The resulting macroscopic electronic properties are qualitatively in agreement with the observation.
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.