T.-Y. Yang, G. Gregori, N. Pellet*, M. Grätzel*
*École Polytechnique Fédérale de Lausanne, Switzerland
Solid state mesoscopic solar cells have exhibited over the last years a formidable efficiency increase reaching values up to 15%. This has been achieved by using hybrid organic-inorganic lead halide pigments as light harvesters. In this context, we investigate the the defect chemistry of such materials in order to gain further insights on their electrical transport mechanism.
Publications:
G. Gregori, T.-Y. Yang, A. Senocrate, M. Grätzel, J. Maier, “Ionic conductivity of organic-inorganic perovskites: relevance of long-time and low frequency behavior”, in: "Organometal halide perovskite photovoltaics: fundamentals and device architectures", Eds. N.-G. Park, M. Grätzel and T. Miyasaka, Springer (2016), in press
N. Pellet, P. Gao, G. Gregori, T.-Y Yang, M.K. Nazeeruddin, J. Maier, and M. Grätzel, “Mixed organic cation perovskite photovoltaics for enhanced solar light harvesting”, Angew. Chem. Int. Ed. 53 [12], 3151-3157 (2014).
T.-Y. Yang, G. Gregori, N. Pellet, M. Grätzel, J. Maier, “The significance of iodine ion conduction in organo-lead iodide perovskite photosensitizer”, Angew. Chem. Int. Ed. 54 [27], 7905-7910 (2015).