Room temperature luminescence in CuI/AgI quantum dots

Room temperature luminescence in a CuI/AgI glass system is investigated by irradiating the system at 410 nm (3.02 eV). The spectrum peaks at 635 nm (1.95 eV) and 700 nm (1.77 eV), while the intensity is significantly enhanced (centered at 635 nm) by increasing the amount of AgI. We propose a model b...

Full description

Saved in:
Bibliographic Details
Published in:Journal of luminescence 2008, Vol.128 (1), p.161-165
Main Authors: Wei, T.H., Chen, C.W., Hwang, L.C., Tu, P.L., Wen, T.C.
Format: Article
Language:English
Subjects:
AgI:Cu + nanocrystals
Condensed matter: electronic structure, electrical, magnetic, and optical properties
CuI/AgI quantum dots
Exact sciences and technology
Holes trapped in vacancy-compensated metal ions
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Physics
Quantum dots
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Room temperature luminescence in a CuI/AgI glass system is investigated by irradiating the system at 410 nm (3.02 eV). The spectrum peaks at 635 nm (1.95 eV) and 700 nm (1.77 eV), while the intensity is significantly enhanced (centered at 635 nm) by increasing the amount of AgI. We propose a model based on an increase in the AgI:Cu + species at higher AgI concentration at which the red emission is attributed to the radiative recombination from carriers trapped at the donor sites (e.g., interstitial silver ions) and the acceptor sites (e.g., a vacancy-compensated divalent cation). The PL efficiency is also estimated by comparison with a standard rhodamine B solution.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2007.07.008