Proceedings of International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics (ABXPV18PEROPTO)
DOI: https://doi.org/10.29363/nanoge.abxpvperopto.2018.067
Publication date: 11th December 2017
Hybrid Halide Perovskite are probably the current hottest materials for photovoltaics. Certified photoconversion efficiencies as high as 22.7% has been reported. Beyond the intrinsic goodness of the halide perovskite materials for the light absorption, efficient carrier transport and low non-radiative recombination, it is not enough to produce a high efficient device and the role of electron and hole selective contacts is dramatic. In this presentation, we will show the effect of different kind of electron selective contacts molecular, polymeric and inorganic. New molecular inorganic contacts will be introduced and compared with the most standard hole selective contact, the Spiro-OMeTAD that present problems for long stability devices. Cells prepared with different selective contact have been optoelectronicaly analyzed by impedance spectroscopy and photoluminescence decay in order to evaluate the charge transfer rate and carrier recombination at the interface. The use of additives in order to increase the performance of hole transporting contact will be also discussed.
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