Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Organometallic perovskite materials have been studied intensively since the pioneer work delivered by Kojima et al. which demonstrated that the organic-inorganic hybrid perovskite behaved like a light harvester. Recently, massive research works using various contact materials and device configurations-evolved from DSCs like mesocsopic, super-mesoscopic, ETA, to OPV-like planar heterojunction-have emerged during the past few years. We present a new paradigm on organometallic hybrid perovskite using an inorganic metal oxide nanocrystalline as cathode electrode material and realized a highly efficient metal oxide/perovskite mesoscopic heterojunction solar device with efficiency of 9.51 %, which approached the similar power conversion efficiency of the conventional sensitization dye solar cells. The photo-induced transient absorption showed that hole injection into NiO formed charge separation state between NiO/perovskite junction. The replacement of organic hole transport materials by metal oxide is advantageous for providing robust device architecture and the development of fully inorganic perovskite-based thin film solar cells. The new mesoscopic NiO metal oxide reported herein provides new building blocks for perovskite-based solar and further diversity in device architecture.
Photovoltaic characteristics of mesoscopic NiO/perovskite solar cells.
1.Kojima, A.; Teshima, K.; Shirai, Y.; Miyasaka, T. J. Am. Chem. Soc. 2009, 131, 6050-6051. 2.Kim, H.-S.; Lee, C.-R.; Im, J.-H.; Lee, K.-B.; Moehl, T.; Marchioro, A.; Moon, S.-J.; Humphry-Baker, R.; Yum, J.-H.; Moser, J. E.; Grätzel, M.; Park, N.-G. Sci. Rep. 2012, 2, 591. 3. Burschka, J.; Pellet, N.; Moon, S.-J.; Humphry-Baker, R.; Gao, P.; Nazeeruddin, M. K.; Grätzel, M. Nature 2013, 499, 316-319.
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