TIME-RESOLVED SPECTROSCOPY OF VISIBLY EMITTING POROUS SILICON

被引：32
作者：
GAPONENKO, SV
GERMANENKO, IN
PETROV, EP
STUPAK, AP
BONDARENKO, VP
DOROFEEV, AM
机构：
[1] MINSK MOLEC & ATOM PHYS INST, MINSK 220072, BELARUS
[2] MINSK RADIOENGN INST, MINSK 220069, BELARUS
来源：
APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 01期
关键词：
D O I：
10.1063/1.112004
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Time-resolved emission spectra and photoluminescence decay kinetics are analyzed in porous Si samples exhibiting a noticeable inhomogeneous broadening under steady-state selective excitation. The gated emission spectra are found to be substantially narrower compared to a steady-state one, with a pronounced redshift with time. Considerable dependence of the decay parameters upon the emission wavelength is found. The decay time distribution analysis applied leads to a model where the nonradiative decay mechanism is attributed to traps of the same type, the number of traps per Si grain obeying the Poissonian statistics.
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页码：85 / 87
页数：3
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