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Title: High energy excitations in CdSe quantum rods

High energy excitations in CdSe quantum rods The plane-wave pseudopotential method is used to calculate the high energy exciton states of large CdSe quantum rods, including spin-orbital coupling and screened electron-hole Coulomb interaction. Theoretical ground exciton energies of colloidal CdSe quantum rods and wires are in good agreement with recent experiment. In addition to photoluminescence spectra, our results also show strong polarization in the absorption spectra of quantum rods, in contrast to spherical quantum dots. The absorption peaks as function of the ground exciton energy are compared with experimental results.
Authors: ;
Publication Date:
OSTI Identifier:822166
Report Number(s):LBNL--51743
R&D Project: K11702; TRN: US200412%%453
DOE Contract Number:AC03-76SF00098
Resource Type:Journal Article
Data Type:
Resource Relation:Journal Name: Nano letters; Journal Volume: 3; Journal Issue: 1; Other Information: Journal Publication Date: January 2003; PBD: 13 Nov 2003
Research Org:Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Org:USDOE Director. Office of Science. Basic Energy Sciences (US)
Country of Publication:United States
Language:English
Subject: 36 MATERIALS SCIENCE; ABSORPTION; ABSORPTION SPECTRA; EXCITONS; PHOTOLUMINESCENCE; POLARIZATION; SPECTRA