Abstract
The room temperature non-exponential luminescence decay of colloidal quantum dots is investigated theoretically in an attempt to identify the underlying physical mechanisms responsible for the shape of the decay. It is shown that a stretched exponential functional form of the luminescence decay can be understood in terms of long-range resonance energy transfer from quantum dots to acceptors (molecules, quantum dots, or anharmonic molecular vibrations) or by contact quenching by quenchers (surface traps, molecules or quantum dots) distributed statistically (Poisson distribution) on the surface of the dots. These non-radiative transition processes are assigned to different ranges of the stretching parameter β.
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References
M. Jones and G. D. Scholes, J. Mater. Chem 20, 3533 (2010).
M. Achermann, M. A. Petruska, S. A. Crooker, and V. I. Klimov, J. Phys. Chem. B 107, 13782 (2003).
A. P. Litvin, P. S. Parfenov, E. V. Ushakova, T. A. Vorsina, A. L. Simões Gamboa, A. V. Fedorov, and A. V. Baranov, J. Phys. Chem. C 119, 17016 (2015).
M. N. Berberan-Santos, E. N. Bodunov, and B. Valeur, Chem. Phys 315, 171 (2005).
V. N. Soloviev, A. Eichhöfer, D. Fenske, and U. Banin, J. Am. Chem. Soc. 123, 2354 (2001).
O. Schöps, N. le Thomas, U. Woggon, and M. V. Artemyev, J. Phys. Chem. B 110, 2074 (2006).
S. Sadhu and A. Patra, J. Phys. Chem. C 115, 16867 (2011).
Al. L. Efros, Phys. Rev. B 46, 7448 (1992).
E. N. Bodunov, V. V. Danilov, A. S. Panfutova, and A. L. Simões Gamboa, Ann. Phys. (Berlin) 528, 272 (2016).
J. Klafter and A. Blumen, J. Chem. Phys. 80, 875 (1984).
M. N. Berberan-Santos, E. N. Bodunov, and J. M. G. Martinho, Opt. Spectrosc. 81, 217 (1996).
M. N. Berberan-Santos, E. N. Bodunov, and J. M. G. Martinho, Opt. Spectrosc. 87, 66 (1999).
E. N. Bodunov and M. N. Berberan-Santos, Opt. Spectrosc. 119, 22 (2015).
E. N. Bodunov, Yu. A. Antonov, and A. L. Simões Gamboa, J. Chem. Phys. 146, 114102 (2017).
D. Feng, D. R. Yakovlev, V. V. Pavlov, A. V. Rodina, E. V. Shornikova, J. Mund, and M. Bayer, Nano Lett. 17, 2844 (2017).
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Bodunov, E.N., Simões Gamboa, A.L. Luminescence Decay of Colloidal Quantum Dots and Stretched Exponential (Kohlrausch) Relaxation Function. Semiconductors 52, 587–589 (2018). https://doi.org/10.1134/S1063782618050044
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DOI: https://doi.org/10.1134/S1063782618050044