RSC Advances p. 1961 - 1967 (2015)
Update date:2022-08-17
Topics:
Li, Ruifeng
Ye, Zhenyu
Kong, Weiguang
Wu, Huizhen
Lin, Xing
Fang, Wei
To understand the fundamental science of nanocrystal growth, the controllable synthesis and growth mechanism of dual size distributed PbSe quantum dots (QDs) are studied. The characterizations of high-resolution transmission electron microscopy (HR-TEM) and photoluminescence (PL) unambiguously demonstrate the dual size distribution of PbSe QDs. Thermodynamic stability of small QDs is confirmed by a controllable synthesis of temperature variation and kinetic perturbation with successive injection of precursors, suggesting a possible mechanism that a chemical-potential well may lead to the size separation. The control of growth temperature plays an important role in the realization of dual size distributed PbSe QDs. Further study of temporal evolution demonstrates the size refocusing of QDs at a higher temperature. Both kinetic perturbation and thermodynamic perturbation could facilitate QDs to overcome the potential barrier. Understanding this mechanism is of significance for the controllable synthesis and applications of PbSe QDs. This journal is
View MoreChangsha Goomoo Chemical Technology Co.Ltd
Contact:+86-731-82197655
Address:No.649,Chezhan Rd.(N),Changsha,Hunan,China
Contact:(86) 731 88718666
Address:Room 1222, Unit 4, Building B, Shangcheng, No.47, Kaiyuan East Road.
Hangzhou Pharma & Chem Co.,Ltd.
Contact:+86-571-87040515
Address:No,139Qingchun Rd
Anyang Double Circle Auxiliary CO.,LTD
Contact:0086-134 6082 4403
Address:dongfeng road, anyang city, henan province,china
Shandong Jusage Technology Co.,Ltd.
Contact:86-13406130167
Address:No.20,North Ride No.9 Road, Guangrao Economic Development Zone, Shandong Province
Doi:10.1007/BF00953600
(1989)Doi:10.1039/c4cc06055e
(2014)Doi:10.1016/0009-3084(76)90072-4
(1976)Doi:10.1016/j.bmcl.2014.07.055
(2014)Doi:10.1021/jp020125l
(2002)Doi:10.1016/S0040-4039(00)99833-2
(1984)