Print Email Facebook Twitter Thermally Activated Second-Order Recombination Hints toward Indirect Recombination in Fully Inorganic CsPbI3 Perovskites Title Thermally Activated Second-Order Recombination Hints toward Indirect Recombination in Fully Inorganic CsPbI3 Perovskites Author Hutter, E.M. (TU Delft ChemE/Opto-electronic Materials) Savenije, T.J. (TU Delft ChemE/Opto-electronic Materials) Date 2018 Abstract The relationship between the dipole moment of the methylammonium cation and the optoelectronic properties of lead halide perovskites remains under debate. We show that both the temperature-dependent charge carrier mobility and recombination kinetics are identical for methylammonium and cesium lead iodide, indicating that the role of the monovalent cation is subordinate to the lead iodide framework. From the observation that for both perovskites the electron-hole recombination is thermally activated, we speculate that the bandgap is slightly indirect. To reference this document use: http://resolver.tudelft.nl/uuid:d2d4472d-7deb-4111-8b06-3b83500f2680 DOI https://doi.org/10.1021/acsenergylett.8b01106 ISSN 2380-8195 Source ACS Energy Letters, 3 (9), 2068-2069 Part of collection Institutional Repository Document type journal article Rights © 2018 E.M. Hutter, T.J. Savenije Files PDF acsenergylett.8b01106.pdf 989.95 KB Close viewer /islandora/object/uuid:d2d4472d-7deb-4111-8b06-3b83500f2680/datastream/OBJ/view