Effect of Nanocrystal Size on Anti-Stokes Photoluminescence in Lead Halide Perovskites
Sekerbayev K.S. Mussabek G.K. Pokryshkin N.S. Yakunin V.G. Taurbayev Y.T. Shabdan Y. Utegulov Z.N. Chirvony V.S. Timoshenko V.Y.
October 2021Pleiades journals
JETP Letters
2021#114Issue 8447 - 450 pp.
We report size-dependent anti-Stokes photoluminescence (ASPL) of methylammonium lead bromide (MALB) perovskite nanocrystals (NCs) under resonant laser excitation. The ASPL efficiency has been found to be stronger for a sample with 6 nm sized MALB NCs. The effect has been explained by the electron–phonon interaction, which results in simultaneous photon–phonon absorption followed by the radiative recombination through excitonic states in MALB NCs. The obtained results can be useful for potential application of MALB NCs in optical cooling.
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Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409, Russian Federation
Institute of Information and Computational Technologies, Almaty, 050000, Kazakhstan
Faculty of Physics, Moscow State University, Moscow, 119991, Russian Federation
School of Engineering and Digital Science, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Physics, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, Valencia, 46071, Spain
Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation
Institute of Experimental and Theoretical Physics
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Institute of Information and Computational Technologies
Faculty of Physics
School of Engineering and Digital Science
Department of Physics
UMDO
Lebedev Physical Institute
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