Photovoltaic properties and defect chemistry of nanocrystalline materials for solar cells

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.


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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). 

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