CdTe Nanocrystals: Synthesis, Optical Characterization, and Pseudopotential Calculation of the Band Gap
CdTe nanocrystals were synthesized in aqueous solution using 1-thioglycerol and 2-mercaptoethanol as surface stabilizers. The nanocrystals were characterized by means of X-ray powder diffraction and UV-vis absorption measurements. The UV-vis absorption spectra exhibit two distinct transition lines. Comparison of the experimental measurements with the results of the empirical pseudopotential calculations of the CdTe nanocrystals showed that the lower energy absorption line can be assigned to the heavy-hole exciton transition, whereas the higher energy absorption line can be attributed to the light-hole exciton transition.
Keywords: CDTE NANOCRYSTALS; EMPIRICAL PSEUDOPOTENTIAL CALCULATIONS; EXCITONS; OPTICAL PROPERTIES; WET CHEMISTRY
Document Type: Research Article
Affiliations: 1: Department of Physics, University of Hull, Hull HU6 7RX, United Kingdom 2: Department of Chemistry, University of Hull, Hull HU6 7RX, United Kingdom
Publication date: 01 December 2001
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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