Redondo-Obispo, CarlosSuárez, IsaacQuesada, Sergio JRipolles, Teresa SMartínez-Pastor, Juan PÁlvarez, Angel Lde Andrés, AliciaCoya, Carmen2023-12-182023-12-182020-02-18C. Redondo-Obispo, I. Suárez, S.J. Quesada, T. S. Ripolles, J. P. Martínez-Pastor, A. L. Álvarez, A. de Andrés, and Carmen Coya The Journal of Physical Chemistry Letters 2020 11 (6), 2188-2194 DOI: 10.1021/acs.jpclett.0c003191948-7185https://hdl.handle.net/10115/27410The poor photostability under ambient conditions of hybrid halide perovskites has hindered their recently explored promising nonlinear optical properties. Here, we show how Bi3+ can partially substitute Pb2+ homogeneously in the commonly studied MAPbI3, improving both environmental stability and photostability under high laser irradiation. Bi content around 2 atom % produces thin films where the nonlinear refractive (n2) and absorptive coefficients (β), which modify the refractive index (Δn) of the material with light fluence (I), increase up to factors of 4 and 3.5, respectively, compared to undoped MAPbI3. Higher doping inhibits the nonlinear parameters; however, the samples show higher fluence damage thresholds. Thus, these results provide a road map on how MAPbI3 can be engineered for practical cost-effective nonlinear applications by means of Bi doping, including optical limiting devices and multiple-harmonic generation into optoelectronics devices.The poor photostability under ambient conditions of hybrid halide perovskites has hindered their recently explored promising nonlinear optical properties. Here, we show how Bi3+ can partially substitute Pb2+ homogeneously in the commonly studied MAPbI3, improving both environmental stability and photostability under high laser irradiation. Bi content around 2 atom % produces thin films where the nonlinear refractive (n2) and absorptive coefficients (β), which modify the refractive index (Δn) of the material with light fluence (I), increase up to factors of 4 and 3.5, respectively, compared to undoped MAPbI3. Higher doping inhibits the nonlinear parameters; however, the samples show higher fluence damage thresholds. Thus, these results provide a road map on how MAPbI3 can be engineered for practical cost-effective nonlinear applications by means of Bi doping, including optical limiting devices and multiple-harmonic generation into optoelectronics devices.engAbsorptiondopingmaterialsperovskitesthin filmsinfo:eu-repo/semantics/article10.1021/acs.jpclett.0c00319info:eu-repo/semantics/openAccess