Publication date: 2nd November 2020
Hybrid perovskites have attracted much attention as a promising photovoltaic material in the past few years. Typically these hybrid perovskites like methyl ammonium lead halides (MAPbX3) undergo dimensionality reduction from 3-D to 0-D and finally to PbX2 upon continuous moisture exposure. In the talk I will be showing that 0-D perovskite related structures exhibit reversible transformation from transparent state to colored 3-D state upon exposure to humidity. Fluorescence imaging of individual microcrystals revealed that the structural phase transition could be visualized in solid state, where in the shape of the crystals transform to cubic crystals. The thermal and the moisture stability were found to be greatly enhanced in the transformed 3-D perovskite. Excellent device stability was also demonstrated when the devices were kept under moist (~70 %RH) conditions.
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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.
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