title: Silica encapsulation of toluene soluble quantum dots with high photostability.
abstract: We report the silica encapsulation of toluene soluble single quantum dots (QDs) with various silica layer thicknesses. The photoluminescence of silica-encapsulated QD showed a blue shift as the silica layer increased. Although the measured decay lifetime and the quantum yields of the silica-encapsulated QDs decreased as the SiO2 layer increased, the silica-encapsulated QDs showed good photostability for certain silica layer thicknesses. Furthermore, photoblinking, the characteristic optical property of single QD, did not change after silica encapsulation. Silica encapsulation of toluene soluble QDs offers great potential for advanced optical applications.
authors: Department of Physics, Graduate School of Nanoscience & Technology (WCU), and KI for the NanoCentury, KAIST, Daejeon, Republic of Korea.
authors: Isnaeni
authors: Li-Hua
authors: LH
authors: Jin
authors: Yong-Hoon
authors: YH
authors: Cho