Journal of the American Chemical Society, volume 134, issue 49, pages 20160-20168

Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine.

Wan Ki Bae 1
Jin Joo 2
Lazaro A. Padilha 3
Jonghan Won 3
Doh Jae Lee 3
Qianglu Lin 4
W.-K. Koh 3
Hongmei Luo 4
Publication typeJournal Article
Publication date2012-11-27
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
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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Bae W. K. et al. Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine. // Journal of the American Chemical Society. 2012. Vol. 134. No. 49. pp. 20160-20168.
GOST all authors (up to 50) Copy
Bae W. K., Joo J., Padilha L. A., Won J., Lee D. J., Lin Q., Koh W., Luo H., Klimov V. I., Pietryga J. M. Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine. // Journal of the American Chemical Society. 2012. Vol. 134. No. 49. pp. 20160-20168.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/ja309783v
UR - https://doi.org/10.1021/ja309783v
TI - Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine.
T2 - Journal of the American Chemical Society
AU - Won, Jonghan
AU - Lin, Qianglu
AU - Bae, Wan Ki
AU - Joo, Jin
AU - Padilha, Lazaro A.
AU - Lee, Doh Jae
AU - Koh, W.-K.
AU - Luo, Hongmei
AU - Klimov, Victor I.
AU - Pietryga, Jeffrey M.
PY - 2012
DA - 2012/11/27 00:00:00
PB - American Chemical Society (ACS)
SP - 20160-20168
IS - 49
VL - 134
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
Cite this
BibTex Copy
@article{2012_Bae,
author = {Jonghan Won and Qianglu Lin and Wan Ki Bae and Jin Joo and Lazaro A. Padilha and Doh Jae Lee and W.-K. Koh and Hongmei Luo and Victor I. Klimov and Jeffrey M. Pietryga},
title = {Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine.},
journal = {Journal of the American Chemical Society},
year = {2012},
volume = {134},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/ja309783v},
number = {49},
pages = {20160--20168},
doi = {10.1021/ja309783v}
}
MLA
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MLA Copy
Bae, Wan Ki, et al. “Highly effective surface passivation of PbSe quantum dots through reaction with molecular chlorine..” Journal of the American Chemical Society, vol. 134, no. 49, Nov. 2012, pp. 20160-20168. https://doi.org/10.1021/ja309783v.
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