The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Highly Effective Surface Passivation of PbSe Quantum Dots through Reaction with Molecular Chlorine
Abstract
PbSe nanocrystal quantum dots (NQDs) are a promising active material for a range of optoelectronic devices, including solar cells, high-sensitivity infrared (IR) photodetectors, and IR-emitting diodes and lasers. However, device realization has been constrained by these NQDs' chemical instability toward oxidation, which leads to uncontrollable changes in optical and electronic properties. Here, we present a simple method to enhance the stability of PbSe NQDs against oxidation and to improve their optical properties through reaction with molecular chlorine. The chlorine molecules preferentially etch out surface Se ions and react with Pb ions to form a thin (1-2 monolayers) PbCl(x) passivation layer which effectively prevents oxidation during long-term air exposure while passivating surface trap states to increase photoluminescence efficiency and decrease photocharging. Our method is simple, widely applicable to PbSe and PbS NQDs of a range of sizes, compatible with solution-based processes for fabricating NQD-based devices, and effective both in solution and in solid NQD films; thus, it is a practical protocol for facilitating advances over the full range of optoelectronic applications.
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Self-citationPbSe Nanocrystal Solids for n- and p-Channel Thin Film Field-Effect Transistors
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Peak External Photocurrent Quantum Efficiency Exceeding 100% via MEG in a Quantum Dot Solar Cell
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Highly Efficient Multiple Exciton Generation in Colloidal PbSe and PbS Quantum Dots
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Colloidal-quantum-dot photovoltaics using atomic-ligand passivation
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Hybrid passivated colloidal quantum dot solids
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Cited by
Organic–Inorganic Hybrid Passivation Enables Perovskite QLEDs with an EQE of 16.48%
Song, J., Fang, T., Li, J., Xu, L., Zhang, F., Han, B., Shan, Q., & Zeng, H. (2018) · Advanced Materials · doi:10.1002/adma.201805409 · Cited by 507
Steric-Hindrance-Driven Shape Transition in PbS Quantum Dots: Understanding Size-Dependent Stability
Choi, H., Ko, J.-H., Kim, Y.-H., & Jeong, S. (2013) · Journal of the American Chemical Society · doi:10.1021/ja400948t · Cited by 403
Woo, J. Y., Kim, Y., Bae, J., Kim, T. G., Kim, J. W., Lee, D. C., & Jeong, S. (2017) · Chemistry of Materials · doi:10.1021/acs.chemmater.7b02669 · Cited by 377
Self-citationThe Many “Facets” of Halide Ions in the Chemistry of Colloidal Inorganic Nanocrystals
Ghosh, S., & Manna, L. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00158 · Cited by 325
Ilyas, A.-M., Gondal, M. A., Yamani, Z. H., & Baig, U. (2017) · International Journal of Energy Research · doi:10.1002/er.3721 · Cited by 31
Metadata
- Authors
- Bae, W. K., Joo, J., Padilha, L. A., Won, J., Lee, D. C., Lin, Q., Koh, W.-K., Luo, H., Klimov, V. I., & Pietryga, J. M.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-11-27
- Volume
- 134
- Issue
- 49
- Pages
- 20160-20168
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2011029277
- Cited by
- 259
- References
- 34
- FWCI
- 10.57
- Type
- journal article
- Language
- en
- Open access
- closed
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- Bae, W. K., Joo, J., Padilha, L. A., Won, J., Lee, D. C., Lin, Q., Koh, W.-K., Luo, H., Klimov, V. I., & Pietryga, J. M. (2012). Highly Effective Surface Passivation of PbSe Quantum Dots through Reaction with Molecular Chlorine. Journal of the American Chemical Society. https://doi.org/10.1021/ja309783v
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