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Photogenerated Exciton Dissociation in Highly Coupled Lead Salt Nanocrystal Assemblies
Abstract
Internanocrystal coupling induced excitons dissociation in lead salt nanocrystal assemblies is investigated. By combining transient photoluminescence spectroscopy, grazing incidence small-angle X-ray scattering, and time-resolved electric force microscopy, we show that excitons can dissociate, without the aid of an external bias or chemical potential gradient, via tunneling through a potential barrier when the coupling energy is comparable to the exciton binding energy. Our results have important implications for the design of nanocrystal-based optoelectronic devices.
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Bright infrared quantum-dot light-emitting diodes through inter-dot spacing control
Sun, L., Choi, J. J., Stachnik, D., Bartnik, A. C., Hyun, B.-R., Malliaras, G. G., Hanrath, T., & Wise, F. W. (2012) · Nature Nanotechnology · doi:10.1038/nnano.2012.63 · Cited by 517
Self-citationMonodisperse, Air-Stable PbS Nanocrystals via Precursor Stoichiometry Control
Weidman, M. C., Beck, M. E., Hoffman, R. S., Prins, F., & Tisdale, W. A. (2014) · ACS Nano · doi:10.1021/nn5018654 · Cited by 414
2D matrix engineering for homogeneous quantum dot coupling in photovoltaic solids
Xu, J., Voznyy, O., Liu, M., Kirmani, A. R., Walters, G., Munir, R., Abdelsamie, M., Proppe, A. H., Sarkar, A., García de Arquer, F. P., et al. (2018) · Nature Nanotechnology · doi:10.1038/s41565-018-0117-z · Cited by 316
Metadata
- Authors
- Choi, J. J., Luria, J., Hyun, B.-R., Bartnik, A. C., Sun, L., Lim, Y.-F., Marohn, J. A., Wise, F. W., & Hanrath, T.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-04-26
- Volume
- 10
- Issue
- 5
- Pages
- 1805-1811
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W1963719146
- Cited by
- 224
- References
- 0
- FWCI
- 7.88
- Type
- journal article
- Language
- en
- Open access
- closed
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