Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO20)
Publication date: 25th November 2019
Organic-inorganic hybrid perovskites are currently the most promising materials for the next-generation solar cells (PSCs). This feature is mainly due to their excellent photovoltaic performances, such as high absorption coefficient, high charge carrier mobility, and long diffusion length. One of the main factors determining long term stability of the PSCs is the access of moisture to perovskite, therefore it is crucial to insulate the material from the environment and to develop tools that indicate when humidity is penetrating the PSCs device. So far, several effects that moisture produces on the PSCs, such as the formation of perovskite mono- and di-hydrates species or the associated conductivity increase of the perovskite film have been shown. Here we show how moisture drives cyclic voltammetry behaviour of PSCs from normal to inverted hysteresis when we increase environmental relative humidity from 0% to 60%. This behaviour ended in the decomposition of the perovskite and failure of the device. When analysing the PSCs with impedance spectroscopy, we were able to observe a transition from a capacitive behaviour, dominated by a giant capacitive, to a spectrum dominated by a negative capacitance (or inductance). The first case is found in well-behaving samples while the second case is related to samples that degraded irreversibly. We can use this characteristic behaviour that we observed for several samples to estimate and control the degradation process in PSCs.
Results that that have resulted in this poster has received funding from the ITN-MAESTRO project from European Union’s Horizon 2020 research and innovation programme under grant agreement No 764787.
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.