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Record |
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Author |
Grodzińska, D.; Evers, W.H.; Dorland, R.; van Rijssel, J.; van Huis, M.A.; Meijerink, A.; de Mello Donegá, C.; Vanmaekelbergh, D. |
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Title |
Two-fold emission from the S-shell of PbSe/CdSe core/shell quantum dots |
Type |
A1 Journal article |
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Year  |
2011 |
Publication |
Small |
Abbreviated Journal |
Small |
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Volume |
7 |
Issue |
24 |
Pages |
3493-3501 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
The optical properties of PbSe/CdSe core/shell quantum dots with core sizes smaller than 4 nm in the 5300 K range are reported. The photoluminescence spectra show two peaks, which become increasingly separated in energy as the core diameter is reduced below 4 nm. It is shown that these peaks are due to intrinsic exciton transitions in each quantum dot, rather than emission from different quantum dot sub-ensembles. Most likely, the energy separation between the peaks is due to inter-valley coupling between the L-points of PbSe. The temperature dependence of the relative intensities of the peaks implies that the two emitting states are not in thermal equilibrium and that dark exciton states must play an important role. |
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Thesis |
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Publisher |
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Place of Publication |
Weinheim |
Editor |
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Language |
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Wos |
000298298300012 |
Publication Date |
2011-10-21 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1613-6810; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
8.643 |
Times cited |
23 |
Open Access |
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Notes |
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Approved |
Most recent IF: 8.643; 2011 IF: 8.349 |
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Call Number |
UA @ lucian @ c:irua:94371 |
Serial |
3781 |
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| Permanent link to this record |
