Surface transformation and photoinduced recovery in CdSe nanocrystals

Surface transformation and photoinduced recovery in CdSe nanocrystals

CdSe nanocrystals in solution and films can enter a metastable state in which the highly luminescent nanocrystals become dark. This change, which we attribute to a surface transformation, can be caused by heating or by changing the environment of the nanocrystals at room temperature. The metastable...

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Veröffentlicht in:Physical review letters 2001-04, Vol.86 (14), p.3132-3135
Hauptverfasser: Hess, B C, Okhrimenko, I G, Davis, R C, Stevens, B C, Schulzke, Q A, Wright, K C, Bass, C D, Evans, C D, Summers, S L
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container_end_page 3135
container_issue 14
container_start_page 3132
container_title Physical review letters
container_volume 86
creator Hess, B C
Okhrimenko, I G
Davis, R C
Stevens, B C
Schulzke, Q A
Wright, K C
Bass, C D
Evans, C D
Summers, S L
description CdSe nanocrystals in solution and films can enter a metastable state in which the highly luminescent nanocrystals become dark. This change, which we attribute to a surface transformation, can be caused by heating or by changing the environment of the nanocrystals at room temperature. The metastable transformation is reversed upon illumination of above-band-gap light, at which point the nanocrystals are again highly luminescent.
doi_str_mv 10.1103/physrevlett.86.3132
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title Surface transformation and photoinduced recovery in CdSe nanocrystals
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