Synthesis CdSexS1-x core/shell type quantum dots via one injection method

Synthesis CdSexS1-x core/shell type quantum dots via one injection method

The photoluminescence quantum yield (PL-QY) of ternary colloidal CdSexS1-x quantum dots (QDs), which were prepared by a one-injection method, enhances with increasing S content. The possible enhancement mechanism was explored by structural analysis via X-ray absorption near edge structure (XANES) an...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2011-01, Vol.47 (5), p.1592-1594
Hauptverfasser: Chen, Liang-Yih, Chen, Ching-Hsiang, Tseng, Chih-Hsiang, Lai, Feng-Lu, Hwang, Bing-Joe
Format: Artikel
Sprache:eng
Schlagworte:
Correlation
Fine structure
Photoluminescence
Quantum dots
Shells
Structural analysis
Synthesis
X-rays
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Beschreibung
Zusammenfassung:The photoluminescence quantum yield (PL-QY) of ternary colloidal CdSexS1-x quantum dots (QDs), which were prepared by a one-injection method, enhances with increasing S content. The possible enhancement mechanism was explored by structural analysis via X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). Both found that the enhancement of PL-QY of ternary CdSexS1-x QDs strongly correlated with self-formed core/shell conformation in the non-coordination solution.
ISSN:1359-7345
DOI:10.1039/C0CC04074F