Die u:cris Detailansicht:

Time-resolved photoluminescence of silicon microstructures fabricated by femtosecond laser in air

Autor(en)

Zhandong Chen, Qiang Wu, Ming Yang, Jianghong Yao, Romano A. Rupp, Yaan Cao, Jingjun Xu

Abstrakt

Green photoluminescence (PL) from silicon microstructures fabricated by

femtosecond laser in air was studied at different temperature by

time-resolved spectroscopy. The PL decay profiles are well fitted by a

stretched exponential function: I(t)=I(0)∗exp[−(t/τ)β]. The dependence of the decay time constant τ and of the stretching index β

on PL photon energy and on the temperature is investigated. A model of

transport and recombination of the carriers is introduced as a possible

explanation of the stretched exponential decay. The nonradiative

recombination rate of the localized carriers, which is dependent on the

carrier density and influenced by the trapping site density and the

temperature, is deduced to be responsible for this kind of decay.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Nankai University

Journal

Optics Express

Band

Seiten

21329-21336

Anzahl der Seiten

ISSN

1094-4087

DOI

https://doi.org/10.1364/OE.21.021329

Publikationsdatum

09-2013

Peer-reviewed

ÖFOS 2012

103021 Optik, 103009 Festkörperphysik, 103040 Photonik, 103018 Materialphysik

Schlagwörter

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