Title |
An effective oxidation approach for luminescence enhancement in CdS quantum dots by H2O2
|
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Published in |
Discover Nano, December 2012
|
DOI | 10.1186/1556-276x-7-672 |
Pubmed ID | |
Authors |
Woojin Lee, Hoechang Kim, Dae-Ryong Jung, Jongmin Kim, Changwoo Nahm, Junhee Lee, Suji Kang, Byungho Lee, Byungwoo Park |
Abstract |
The effects of surface passivation on the photoluminescence (PL) properties of CdS nanoparticles oxidized by straightforward H2O2 injection were examined. Compared to pristine cadmium sulfide nanocrystals (quantum efficiency ≅ 0.1%), the surface-passivated CdS nanoparticles showed significantly enhanced luminescence properties (quantum efficiency ≅ 20%). The surface passivation by H2O2 injection was characterized using X-ray photoelectron spectroscopy, X-ray diffraction, and time-resolved PL. The photoluminescence enhancement is due to the two-order increase in the radiative recombination rate by the sulfate passivation layer. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 31 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 11 | 35% |
Student > Doctoral Student | 4 | 13% |
Student > Master | 4 | 13% |
Researcher | 3 | 10% |
Professor | 2 | 6% |
Other | 3 | 10% |
Unknown | 4 | 13% |
Readers by discipline | Count | As % |
---|---|---|
Materials Science | 7 | 23% |
Physics and Astronomy | 6 | 19% |
Chemistry | 6 | 19% |
Engineering | 2 | 6% |
Business, Management and Accounting | 1 | 3% |
Other | 4 | 13% |
Unknown | 5 | 16% |