Surface transformation and photoinduced recovery in CdSe nanocrystals |
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| Authors: | 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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| Affiliation: | Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84062, USA. |
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| Abstract: | 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. |
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