Applied physics

, Volume 24, Issue 1, pp 1–5 | Cite as

Enhancement of minority carrier lifetime in GaAs1−x P x (x=0.4; 0.65) by nitrogen implantation

  • M. Takai
  • H. Ryssel
Solids and Surfaces


Minority carrier lifetimes in nitrogen implanted GaAs1-x P x (x=0.4; 0.65) were measured at 77K by an optical phase shift method as a function of nitrogen dose and annealing temperature in order to investigate the dependence of the lifetime on the concentration of nitrogen isoelectronic traps. A large increase in the lifetime was observed after nitrogen implantation followed by annealing at and above 800°C. The maximum lifetimes were 22ns for GaAs0.35P0.65 and 6.7 ns for GaAs0.6P0.4. They were obtained by implantation to a dose of 5×1013 cm−2 in GaAs0.35P0.65 and 1013 cm−2 in GaAs0.6P0.4. The lifetime after nitrogen implantation followed by annealing was longer by a factor of 6–7 than that of the unimplanted sample.


72.20.Jv 72.80.Ey 61.70.Tm 


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Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • M. Takai
    • 1
  • H. Ryssel
    • 1
  1. 1.Fraunhofer-Institut für FestkörpertechnologieMünchen 60Fed. Rep. Germany

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