Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
DOI: https://doi.org/10.29363/nanoge.hopv.2020.148
Publication date: 6th February 2020
A well-known module reliability issue in crystalline-silicon photovoltaics arises when a shaded cell is driven into reverse bias by illuminated cells connected in series [1]. In this case, the shaded cell may dissipate a substantial amount of power, which can create hot spots and irreversibly damage the cell or encapsulant. This problem is even more severe for perovskite solar cells. It has been demonstrated [2] that, even in the absence of hot spot formation, such cells can degrade simply from being subjected to a few minutes of reverse bias. This degradation was suggested to be caused by an electrochemical reaction that occurs between mobile ions inside the perovskite and the adjacent layers, although only indirect evidence was given [2]. It also remains to be analyzed how the problem may manifest itself in monolithic perovskite/c-Si tandem cells, particularly when illuminated by different spectra and intensities. Here we investigate this instability further by using microstructural analysis techniques to determine the distribution of ions in degraded cells with different compositions and with different contact layers, both in single-junction and in tandem structures. We also analyze the requirements the cell must meet to be considered stable under reverse bias, taking into account the possibility of adding bypass diodes to the module.
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.