Urbach tail studies by luminescence filtering in moderately doped bulk InP
نویسندگان
چکیده
منابع مشابه
Anomalous Urbach tail in GaAs.
The Urbach tail in crystalline GaAs and Si due to thermal vibration is evaluated in the temperature range 0—810 K. Recent experiments suggest that there is no thermally induced Urbach tail in undoped GaAs. This is most unexpected since thermally induced tails at the absorption edge having the Urbach form and widths Eo(T) linear in T are observed in a wide range of crystalline and amorphous semi...
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Recombination of minority carriers in heavily doped n-InP wafers has been investigated using spectral and time-resolved photoluminescence at different temperatures. Studies of the transmitted luminescence were enabled by the partial transparency of the samples due to the Moss–Burstein effect. Temporal evolution of the transmitted luminescence shows virtually no effect of surface recombination b...
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We study the photoluminescence spectra excited at an edge side of n-InP slabs and observed from the broadside. In a moderately doped sample the intensity drops off as a power-law function of the distance from the excitation—up to several millimeters—with no change in the spectral shape. The hole distribution is described by a stationary Lévy-flight process over more than two orders of magnitude...
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2010
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.3510470