ACS Nano, volume 10, issue 3, pages 3356-3364
Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals.
Publication type: Journal Article
Publication date: 2016-02-24
General Physics and Astronomy
General Materials Science
General Engineering
Abstract
We report on a temperature-, time-, and spectrally resolved study of the photoluminescence of type-I InP/ZnS colloidal nanocrystals with varying core size. By studying the exciton recombination dynamics we assess the exciton fine structure in these systems. In addition to the typical bright-dark doublet, the photoluminescence stems from an upper bright state in spite of its large energy splitting (∼100 meV). This striking observation results from dramatically lengthened thermalization processes among the fine structure levels and points to optical-phonon bottleneck effects in InP/ZnS nanocrystals. Furthermore, our data show that the radiative recombination of the dark exciton scales linearly with the bright-dark energy splitting for CdSe and InP nanocrystals. This finding strongly suggests a universal dangling bonds-assisted recombination of the dark exciton in colloidal nanostructures.
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Biadala L. et al. Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals. // ACS Nano. 2016. Vol. 10. No. 3. pp. 3356-3364.
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Biadala L., Siebers B., Beyazit Y., Yakovlev D. G., Bayer M. Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals. // ACS Nano. 2016. Vol. 10. No. 3. pp. 3356-3364.
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TY - JOUR
DO - 10.1021/acsnano.5b07065
UR - https://doi.org/10.1021/acsnano.5b07065
TI - Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals.
T2 - ACS Nano
AU - Biadala, L.
AU - Siebers, Benjamin
AU - Beyazit, Yasin
AU - Yakovlev, D G
AU - Bayer, M.
PY - 2016
DA - 2016/02/24
PB - American Chemical Society (ACS)
SP - 3356-3364
IS - 3
VL - 10
SN - 1936-0851
SN - 1936-086X
ER -
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@article{2016_Biadala,
author = {L. Biadala and Benjamin Siebers and Yasin Beyazit and D G Yakovlev and M. Bayer},
title = {Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals.},
journal = {ACS Nano},
year = {2016},
volume = {10},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://doi.org/10.1021/acsnano.5b07065},
number = {3},
pages = {3356--3364},
doi = {10.1021/acsnano.5b07065}
}
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Biadala, L., et al. “Band-Edge Exciton Fine Structure and Recombination Dynamics in InP/ZnS Colloidal Nanocrystals..” ACS Nano, vol. 10, no. 3, Feb. 2016, pp. 3356-3364. https://doi.org/10.1021/acsnano.5b07065.