TY - JOUR
T1 - Size-dependent excited state properties of CdS nanocrystals
AU - Ma, Guohong
AU - Tang, Sing Hai
AU - Sun, Wanxin
AU - Shen, Zexiang
AU - Huang, Weiming
AU - Shi, Jianlin
PY - 2002/7/15
Y1 - 2002/7/15
N2 - CdS nanocrystals of different particle sizes dispersed in ZrO2 films were fabricated by sol-gel and dipping method. The size dependent excited state optical properties were systematically investigated by photoluminescence, time-resolved photoluminescence and Raman spectroscopy. The experimental results show that the relaxation of the excited state is composed of two processes. The fast component that arises from band edge emission shows a weak dependence on particle size, while the slow component, which is attributed to the shallow defect level emission, exhibits strong dependence on particle sizes.
AB - CdS nanocrystals of different particle sizes dispersed in ZrO2 films were fabricated by sol-gel and dipping method. The size dependent excited state optical properties were systematically investigated by photoluminescence, time-resolved photoluminescence and Raman spectroscopy. The experimental results show that the relaxation of the excited state is composed of two processes. The fast component that arises from band edge emission shows a weak dependence on particle size, while the slow component, which is attributed to the shallow defect level emission, exhibits strong dependence on particle sizes.
UR - https://www.scopus.com/pages/publications/0037100644
U2 - 10.1016/S0375-9601(02)00680-1
DO - 10.1016/S0375-9601(02)00680-1
M3 - 文章
AN - SCOPUS:0037100644
SN - 0375-9601
VL - 299
SP - 581
EP - 585
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 5-6
ER -