The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Temperature and Size Dependence of Nonradiative Relaxation and Exciton−Phonon Coupling in Colloidal CdTe Quantum Dots
Abstract
We report on the temperature and size dependence of the photoluminescence of core CdTe colloidal quantum dots (QDs). We show that at temperatures lower than 170 K a thermally activated transition between two different states separated by about 12−20 meV takes place. At temperatures higher than 170 K, the main nonradiative process is thermal escape assisted by multiple longitudinal optical (LO) phonons absorption. Moreover, we show that quantum confinement affects both the exciton−acoustic phonons and the exciton−LO phonons coupling. The coupling constant with acoustic phonons is strongly enhanced in QDs (up to 31μeV/K) with respect bulk CdTe (0.7μeV/K). On the contrary, the exciton-LO phonons coupling constant decreases as the dot size decreases (down to 14 meV with respect 24.5 meV in the bulk).
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Dabbousi, B. O., Rodriguez-Viejo, J., Mikulec, F. V., Heine, J. R., Mattoussi, H., Ober, R., Jensen, K. F., & Bawendi, M. G. (1997) · The Journal of Physical Chemistry B · doi:10.1021/jp971091y · Cited by 4,229
Cited by
Advanced Nanoarchitectures for Solar Photocatalytic Applications
Kubacka, A., Fernández-García, M., & Colón, G. (2012) · Chemical Reviews · doi:10.1021/cr100454n · Cited by 2,373
Luo, B., Pu, Y., Lindley, S. A., Yang, Y., Lu, L., Li, Y., Li, X., & Zhang, J. Z. (2016) · Angewandte Chemie International Edition · doi:10.1002/anie.201602236 · Cited by 334
Temperature-Dependent Photoluminescence of CdSe-Core CdS/CdZnS/ZnS-Multishell Quantum Dots
Jing, P., Zheng, J., Ikezawa, M., Liu, X., Lv, S., Kong, X., Zhao, J., & Masumoto, Y. (2009) · The Journal of Physical Chemistry C · doi:10.1021/jp902080p · Cited by 270
Metadata
- Authors
- Morello, G., De Giorgi, M., Kudera, S., Manna, L., Cingolani, R., & Anni, M.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-04-01
- Volume
- 111
- Issue
- 16
- Pages
- 5846-5849
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2070938138
- Cited by
- 183
- References
- 1
- FWCI
- 2.38
- Type
- journal article
- Language
- en
- Open access
- closed
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