Publication date: 23rd October 2020
In recent years, solar cells based on complex lead halides demonstrate an extraordinary growth in power conversion efficiency (PCE), which now exceeds 25% for the best laboratory samples. However, the practical application of perovskite solar cells is still hampered due to their low operational stability. In addition to the widely studied effects of photochemical and thermal degradation, a special attention should also be paid to electrochemical stability of absorber materials and the solar cells. In this work, electrochemical stability of perovskite solar cells assembled with various electron-transport layer (ETL) materials was systematically compared. Devices with oxide-based ETLs such as ZnO and SnO 2 were exposed to the constant electric field in inert atmosphere in the dark and at a room temperature to exclude the influence of other stress factors such as light or heat. The evolution of the solar cell efficiency under the applied bias was analyzed and the obtained results revealed that electrochemical stability of perovskite solar cells is highly dependent on the used ETL material. It was also shown that short biasing of PSC with ZnO ETL can enhance significantly their efficiency.
Thus, the obtained results emphasize the importance of multi-parameter optimization of the device structure and, most importantly, the composition of the electron-transport layer, to achieve the long-term operational stability
of the perovskite solar cells.
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.