Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Perovskite solar cells (PSCs) have gained the attention of the scientific community in recent years due to their unexpected properties and low-temperature processing. In terms of morphology, the annealing conditions are crucial and highly determinant on the performance of the devices. Some optimizations are usually performed based on semi-empirical experiments, but here we studied the heat transfer in order to prevent detrimental effects in the photovoltaic performance principally produced by low crystallization and localized excessive thermal stress in the synthetized perovskite. Differential scanning calorimetry (DSC) was used to reveal the thermal transitions occurring during crystallization of a mesoporous alumina-based PSC, which lead us to understand the processes occurring during the crystallization of the perovskite (CH3NH3PbI3-xClx) in presence of a Al2O3 mesoporous layer, and the heat transfer flux affecting the perovskite formation. DSC analysis also indicated that when low annealing temperatures were used the perovskite did not present good crystallinity while at high temperatures the thermal stress created on the infiltrated perovskite promoted low efficiencies. Finally, the optimal crystallization conditions were found to be 100 °C during 90 minutes, with a short post-annealing at 130 °C for 10 minutes, which promoted a photoconversion efficiency up to 10.89%.
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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.
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