Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Solar cells based on perovskite semiconductors are at the forefront of photovoltaics research due to increasing power conversion efficiencies and lowering production costs. Large research effort is now centered on the long-term stability of the cell performance and the problem of dynamical hysteresis. This anomalous phenomenon is expressed as a deviation of the measured current from the classic Shockley ideal diode equation, and it is due to capacitance currents arising from space charge layers formed during the ”past history” of the device. Dynamical hysteresis is connected with the accumulation of mobile ions at the contacts. To further understand the role of these ions, we theoretically investigate an electron selective contact with Schottky defects in the dark and under illumination (TiO_2 / CH_3NH_3PbI_3). Our density functional theory calculations are consistent with a realistic open-circuit photovoltage of 1 V, which appears when cations and interlayer excitons are accumulated at the heterointerface. The reported results underscores the relevance of these constituents in the operation of the cells, and open the way to more ambitious theoretical works in terms of system size and computer demand.
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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.