Artículo
Strong Quantum Confinement and Fast Photoemission Activation in CH3NH3PbI3 Perovskite Nanocrystals Grown within Periodically Mesostructured Films
Autor/es | Anaya Martín, Miguel
Rubino, Andrea Rojas Ruiz, Teresa Cristina Galisteo López, Juan Francisco Calvo Roggiani, Mauricio Míguez García, Hernán Ruy |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2017 |
Fecha de depósito | 2017-10-06 |
Publicado en |
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Resumen | In this Communication, a synthetic route is demonstrated to obtain stabilized MAPbI3 nanocrystals embedded in thin metal oxide films that display well-defined and adjustable quantum confinement effects over a wide range ... In this Communication, a synthetic route is demonstrated to obtain stabilized MAPbI3 nanocrystals embedded in thin metal oxide films that display well-defined and adjustable quantum confinement effects over a wide range of 0.34 eV. Mesostructured TiO2 and SiO2 films displaying an ordered 3D pore network are prepared by evaporation-induced self-assembly of a series of organic supramolecular templates in the presence of metal oxide precursors. The pores in the inorganic films obtained after thermal annealing are then used as nanoreactors to synthesize MAPbI3 crystallites with narrow size distribution and average radius comprised between 1 and 4 nm, depending on the template of choice. Both the static and dynamic photoemission properties of the ensemble display features distinctive of the regime of strong quantum confinement. Photoemission maps demonstrate that the spectral and intensity properties of the luminescence extracted from the perovskite quantum dot loaded films are homogeneous over squared centimeters areas. At variance with their bulk counterparts, constant emission intensity is reached in time scales at least four orders of magnitude shorter. |
Agencias financiadoras | European Union (UE). FP7 Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | info:eu-repo/grantAgreement/EC/FP7/307081
info:eu-repo/grantAgreement/MINECO/MAT2014-54852-R |
Cita | Anaya Martín, M., Rubino, A., Rojas Ruiz, T.C., Galisteo López, J.F., Calvo Roggiani, M.E. y Míguez García, H.R. (2017). Strong Quantum Confinement and Fast Photoemission Activation in CH3NH3PbI3 Perovskite Nanocrystals Grown within Periodically Mesostructured Films. Advanced Optical Materials, 5 (8), 1-7. |
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