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Volumn 278, Issue 5346, 1997, Pages 2114-2117

Quantum-confined stark effect in single cdSe nanocrystallite quantum dots

Author keywords

[No Author keywords available]

Indexed keywords

CADMIUM DERIVATIVE; SELENIUM DERIVATIVE;

EID: 0031472139     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.278.5346.2114     Document Type: Article
Times cited : (904)

References (28)
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    • note
    • Numerical calculations show a relatively uniform field across the substrate surface at a distance farther than 1 μm from either electrode (the field profile varies with σ = 7% of the mean).
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    • note
    • Formally, what is measured in these experiments is actually the difference between the excited-and ground-state dipole (polarizability). For simplicity in discussion, we refer to this value as the excited-state dipole (polarizability). This is a reasonable assertion because, to a first approximation, any structural (ground-state) dipole (polarizability) should be relatively unaffected by the presence of a delocalized excitation.
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    • note
    • -8). The observed high fluorescence intensity suggests that field ionization is not a significant contribution.
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    • note
    • Data were collected from 47 single QDs for the 37.5 Å overcoated sample and from 57, 83, 74, and 16 single QDs for the 37.5 Å, 29 Å, 26 Å, and 22 Å standard samples, respectively. Calculations included screening by the CdSe core and ZnS shell as necessary.
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    • note
    • S.A.E. benefited from a Department of Defense graduate fellowship. This work was supported by the David and Lucile Packard Foundation and the Sloan Foundation. This research was funded in part by the NSF-Materials Research Science and Engineering Center program (DMR-94-00034). We thank the Massachusetts Institute of Technology Harrison Spectroscopy Laboratory (NSF-CHE-93-04251) for support and for allowing use of its facilities.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.