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Deep level defects in n- and p-type Fe implanted InP

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  • Bakry, Assem M.
  • Darweesh, Salah

Abstract

Deep level transient spectroscopy (DLTS) measurements had been performed on n- and p-type Fe implanted InP crystals. A majority carrier trap of activation energy Ea = 118 ± 20 mev was detected in Zn doped p-type samples. A minority carrier trap of activation energy Ea = 78 ± 20 mev was detected in the same samples. As for n-type samples doped with Sn, a single majority carrier trap having an activation energy Ea = 49 ± 20 mev was found. The calculated capture cross section at infinite temperature (σ∞) fr all the detected traps was very small (in the order of 10−20 cm2), characterizing those traps as Coulombic repulsive. The capacitance transient for all samples was non-exponential, giving rise to broad peaks. This could be explained on the basis of having several defect levels closely spaced rather than a discrete one. The trap concentration Nt was calculated and found to be in the order of 1016 cm−3, showing a higher concentration in p-type samples than those of n-type.

Suggested Citation

  • Bakry, Assem M. & Darweesh, Salah, 1997. "Deep level defects in n- and p-type Fe implanted InP," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 242(1), pages 161-165.
    • Handle: RePEc:eee:phsmap:v:242:y:1997:i:1:p:161-165
    DOI: 10.1016/S0378-4371(97)00201-X
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    References listed on IDEAS

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    1. Tsang, Mun C. & Levin, Henry M., 1989. "The economics of overeducation: Reply," Economics of Education Review, Elsevier, vol. 8(2), pages 209-209, April.
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