TY  - JOUR
KW  - SI NANOCRYSTALS
KW  -  RICH SILICA
KW  -  THIN-FILMS
KW  -  OPTICAL-PROPERTIES
KW  -  ENERGY-TRANSFER
KW  -  VISIBLE PHOTOLUMINESCENCE
KW  -  POROUS SILICON
KW  -  ER3+
KW  -  ELECTROLUMINESCENCE
KW  -  SIO2-FILMS
PB  - AMER INST PHYSICS
N2  - We develop a model for the excitation of erbium ions in erbium-doped silicon nanocrystals via coupling from confined excitons generated within the silicon nanoclusters. The model provides a phenomenological picture of the exchange mechanism and allows us to evaluate an effective absorption cross section for erbium of up to 7.3x10(-17) cm(2): four orders of magnitude higher than in stoichiometric silica. We address the origin of the 1.6 eV emission band associated with the silicon nanoclusters and determine absorption cross sections and excitonic lifetimes for nanoclusters in silica which are of the order of 1.02x10(-16) cm(2) and 20-100 mus, respectively. (C) 2002 American Institute of Physics.
ID  - discovery149703
AV  - public
Y1  - 2002/01/01/
EP  -  374
TI  - Luminescence from erbium-doped silicon nanocrystals in silica: Excitation mechanisms
A1  - Kenyon, AJ
A1  - Chryssou, CE
A1  - Pitt, CW
A1  - Shimizu-Iwayama, T
A1  - Hole, DE
A1  - Sharma, N
A1  - Humphreys, CJ
JF  - Journal of Applied Physics
UR  - http://dx.doi.org/10.1063/1.1419210
SN  - 0021-8979
IS  - 1
N1  - Copyright 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Kenyon, AJ and Chryssou, CE and Pitt, CW and Shimizu-Iwayama, T and Hole, DE and Sharma, N and Humphreys, CJ (2002) Luminescence from erbium-doped silicon nanocrystals in silica: Excitation mechanisms. Journal of Applied Physics, 91 (1) 367 - 374 and may be found at http://link.aip.org/link/?jap/91/00367
SP  - 367 
VL  - 91
ER  -