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 transformation is reversed upon illumination of above-band-gap light, at which point the nanocrystals are again highly luminescent.
Hess
B C
BC
Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84062, USA.
Okhrimenko
I G
IG
Davis
R C
RC
Stevens
B C
BC
Schulzke
Q A
QA
Wright
K C
KC
Bass
C D
CD
Evans
C D
CD
Summers
S L
SL