Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Widespread attention has been devoted recently to semiconducting organic-inorganic lead halide perovskites, because of the excellent light absorption properties of these materials in the visible and near-infrared regions. Recently, blended samples of 3D perovskites and lower dimensional counterparts showed enhanced photostability and environmental stability of perovskite solar cells. Here, we report the synthesis and crystal structure of an organic-inorganic perovskite-like compound, ethylenediammonium lead iodide, NH3CH2CH2NH3PbI4. Synchrotron-based single crystal X-ray diffraction experiments revealed that the pristine and thermally treated crystals of ethylenediammonium lead iodide differ only in the organic cation behaviour, which is characterized by a partial disorder in the thermally treated crystal. Static, dynamic and partial disorder models of the organic cation are discussed. Based on current-voltage measurements, we observed a link between the increased disorder of ethylenediammonium in the thermally treated crystal and its photoconductivity. This compound could be a potential candidate for further interface engineering in lead halide perovskite-based optoelectronic devices.
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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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