ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
A direct measurement of carrier recombination, far from equilibrium, in Hg0.795Cd0.205Te (Nd−Na=3.3×1014 cm−3) has been made on a picosecond time scale with a pump–probe technique using a free-electron laser. Over the range of carrier densities (5×1016–3×1017 cm−3) and at the temperatures (50–300 K) studied experimentally, contributions to the recombination from Auger, Shockley–Read–Hall, and radiative mechanisms were calculated using an analytic approximation, with carrier degeneracy included, Auger-1 (CCCH) recombination rates were calculated, which also gave the Auger-7 (CHHL) rates via a simple relationship. Excellent agreement was obtained, with Auger-1 dominant at all temperatures and, significantly, for T〉225 K when the sample is intrinsic, the Auger-7 contribution was found to be important. © 1997 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.119588
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