Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Substrate coverage of high-quality perovskite thin films is one of the main issues affecting planar-structure perovskite solar cells fabricated by solution processing. In this study, solvent engineering was performed in order to optimize the thin film coverage and structure of a perovskite layer in an inverted perovskite solar cell. The device structure embeds the absorber methylammonium lead iodide (CH3NH3PbI3) between respective hole and electron transport layers of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) and C60. For the solvent engineering a mix of gamma butyrolactone (GBL) and dimethylsulphoxide (DMSO) was used to dissolve the individual perovskite components, followed by toluene drop-casting step during the thin film deposition. This approach leads to extremely uniform and dense perovskite layers. Optical microscopy, atomic force microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy were performed to characterize the structure of perovskite layer. The formation of a void-free perovskite layer may improve the efficiency of perovskite solar cells.
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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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