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Title: Size controlled near-infrared high-quality PbSe quantum dots

Herein, we report the size controlled preparation of PbSe quantum dots (QDs) by non coordinating solvent route using oleic acid as surfactant molecules. The particles size is controlled by varying temperature and time of reaction. The present method of synthesis gives highly stable colloids, spherical in shape, better size tunability, narrow size distribution, extremely small size, monodisperse and exhibit strong near-infrared emission. The estimated particles sizes are in the range of 2 to 8 nm. These PbSe quantum dots are used for applications in optoelectronics and biological imaging.
Authors:
 [1] ; ;  [2] ;  [3]
  1. Dept. of Physics, SDM College of Engineering & Technology, Dharwad-580003 (India)
  2. Department of Physics, Karnatak University, Dharwad-580003 (India)
  3. Cavendish Laboratory, Dept. of Physics, University of Cambridge, Cambridge CB3 OHE United Kingdom (United Kingdom)
Publication Date:
OSTI Identifier:
22490344
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; COLLOIDS; COORDINATES; EMISSION; LEAD SELENIDES; MOLECULES; NEAR INFRARED RADIATION; OLEIC ACID; PARTICLE SIZE; QUANTUM DOTS; SOLVENTS; SPHERICAL CONFIGURATION; SYNTHESIS