Surface Transformation and Photoinduced Recovery in CdSe Nanocrystals
Open Access
- 2 April 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (14), 3132-3135
- https://doi.org/10.1103/PhysRevLett.86.3132
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.Keywords
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