College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410128, China.
Phys Chem Chem Phys. 2013 Mar 7;15(9):3130-2. doi: 10.1039/c3cp43668c. Epub 2013 Jan 24.
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.
核壳量子点会因长于其发射波长的光而发生光漂白。也就是说，能量较低的光子虽不足以将电子泵入导带，但也能引发 QD 光漂白。最可能的原因是电子被泵入表面态，然后像传统光漂白那样非辐射衰减。
