Photobleaching of quantum dots by non-resonant light.
Core-shell quantum dots suffer from photobleaching by light at wavelengths longer than their emission wavelengths. That is, QD photobleaching can be triggered by photons with low energies that are insufficient to pump electrons into the conduction band. The most probable reason is that electrons are pumped into a surface state and then nonradiatively decayed as in conventional photobleaching.
College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China.
Xingbo
X
Shi
Yang
Y
Tu
Xiaojun
X
Liu
Edward S
ES
Yeung
Hongwei
H
Gai
D008027:Light; D008956:Models, Chemical; D038761:Photobleaching; D045663:Quantum Dots