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dc.contributor.authorGonzález Pedro, Victoria
dc.contributor.authorJuárez Pérez, Emilio José
dc.contributor.authorArsyad, Waode Sukmawati
dc.contributor.authorBarea, Eva M.
dc.contributor.authorFabregat-Santiago, Francisco
dc.contributor.authorMora-Sero, Ivan
dc.contributor.authorBisquert, Juan
dc.identifier.citationGONZALEZ-PEDRO, Victoria, et al. General working principles of CH3NH3PbX3 perovskite solar cells. Nano letters, 2014, vol. 14, no 2, p. 888-893.ca_CA
dc.description.abstractOrganometal halide perovskite-based solar cells have recently realized large conversion efficiency over 15% showing great promise for a new large scale cost-competitive photovoltaic technology. Using impedance spectroscopy measurements we are able to separate the physical parameters of carrier transport and recombination in working devices of the two principal morphologies and compositions of perovskite solar cells, viz. compact thin films of CH3NH3PbI3–xClx and CH3NH3PbI3 infiltrated on nanostructured TiO2. The results show nearly identical spectral characteristics indicating a unique photovoltaic operating mechanism that provides long diffusion lengths (1 μm). Carrier conductivity in both devices is closely matched, so that the most significant differences in performance are attributed to recombination rates. These results highlight the central role of the CH3NH3PbX3 semiconductor absorber in carrier collection and provide a new tool for improved optimization of perovskite solar cells. We report for the first time a measurement of the diffusion length in a nanostructured perovskite solar cell.ca_CA
dc.description.sponsorShipWe thank the following agencies for supporting this research: GeneralitatValenciana (ISIC/2012/008) and Universitat Jaume I project 12I361.01/1. We thank SCIC from Universitat Jaume I for the help with SEM measurements.ca_CA
dc.format.extent6 p.ca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.relation.isPartOfNano letters, 2014, vol. 14, no 2ca_CA
dc.rightsCopyright © 2014 American Chemical Societyca_CA
dc.subjectsolar cellsca_CA
dc.titleGeneral Working Principles of CH3NH3PbX3 Perovskite Solar Cellsca_CA

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