Publication date: 1st July 2014
Organometallic perovskite materials have become one of the most attractive research domains in photovoltaics in the last few years. Organometallic halides like MAIPbI3 and MAIPbI3-xClx exhibit promising conversion efficiency of >15%[1, 2] that may lead to an economically viable photovoltaic technology in near future. As a performance bottleneck, the organic polymers used for hole conduction can be identified. Here we present two alternative inorganic hole transporting materials, NiO and CuSCN under reverse architecture in MAIPbI3-xClx based perovskite solar cells. Electrodeposited CuSCN and NiO were used as hole transporting layers. The device performances reveal an average efficiency of 4.5% and 7.3% using CuSCN and NiO respectively. This technology never challenges the existing ones but rather showed a possibilistic scenario for further developments.
References:
[1] D. Liu, T.L. Kelly, Perovskite solar cells with a planar heterojunction structure prepared using room-temperature solution processing techniques, Nat Photon, (2014); 8:133-138.
[2] M. Liu, M.B. Johnston, H.J. Snaith, Efficient planar heterojunction perovskite solar cells by vapour deposition, Nature, (2013); 501:395-398.
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