Gain high-quality colloidal quantum dots directly from natural minerals

Wu, Wen-Tian, Liu, Hui, Dong, Chao, Zheng, Wen-Jing, Han, Li-Li, Li, Lan, Qiao, Shi-Zhang, Yang, Jing and Du, Xi-Wen (2015) Gain high-quality colloidal quantum dots directly from natural minerals. Langmuir, 31 8: 2251-2255. doi:10.1021/la5044415

Author Wu, Wen-Tian
Liu, Hui
Dong, Chao
Zheng, Wen-Jing
Han, Li-Li
Li, Lan
Qiao, Shi-Zhang
Yang, Jing
Du, Xi-Wen
Title Gain high-quality colloidal quantum dots directly from natural minerals
Journal name Langmuir   Check publisher's open access policy
ISSN 1520-5827
Publication date 2015-03-03
Year available 2015
Sub-type Article (original research)
DOI 10.1021/la5044415
Volume 31
Issue 8
Start page 2251
End page 2255
Total pages 5
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2016
Language eng
Abstract Green and simple synthesis of high-quality colloidal quantum dots (CQDs) is of great importance and highly anticipated yet not fully implemented. Herein, we achieve the direct conversion of natural minerals to highly uniform, crystalline lead sulfide CQDs based on laser irradiation in liquid. The trivial fragmentation of mineral particles by an intense nanosecond laser was found to create a localized high degree of monomer supersaturation in oleic acid, initiating the LaMer growth of uniform CQDs. The photoconductive device made of these CQDs exhibits a competitive temporal response of photocurrent with those highly sensitive photodetectors based on PbS CQDs reported in the literature. Our synthesis strategy paves the way for the most environmentally friendly and convenient mass production of high-quality uniform CQDs.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Australian Institute for Bioengineering and Nanotechnology Publications
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Created: Fri, 19 Jun 2015, 18:48:02 EST by System User on behalf of Aust Institute for Bioengineering & Nanotechnology