TITLE

Galvanomagnetic luminescence of indium antimonide

AUTHOR(S)
Berdahl, Paul; Shaffer, Louie
PUB. DATE
December 1985
SOURCE
Applied Physics Letters;12/15/1985, Vol. 47 Issue 12, p1330
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report measurements of the absolute spectral intensity due to galvanomagnetic luminescence of intrinsic InSb at room temperature. Together with a calculation of carrier and photon transport, these measurements form the basis for a new technique for the determination of carrier lifetimes and diffusion lengths. The excess carrier lifetime for InSb is found to be 6 ns, and the ambipolar diffusion length at 1.9 T is 3 µm. The spectrally integrated luminescence has a bilinear form in terms of the exciting current density j and magnetic field B: ΔF = GB j, where ΔF is the change in the total emitted radiant energy flux from the thermal equilibrium value (j = 0). In particular ΔF can be negative. The new thermodynamic transport coefficient G has the value 1.8 µW A[sup -1] T[sup -1] at 33 °C and decreases with increasing temperature.
ACCESSION #
9818676

 

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