Aluminum-free quantum well intersubband photodetectors with p-type GaAs wells and lattice-matched ternary and quaternary barriers

James R. Hoff; Erwan Bigan; Gail J. Brown; Manijeh Razeghi

doi:10.1117/12.206893

24 April 1995 Aluminum-free quantum well intersubband photodetectors with p-type GaAs wells and lattice-matched ternary and quaternary barriers

James R. Hoff, Erwan Bigan, Gail J. Brown, Manijeh Razeghi

Author Affiliations +

Proceedings Volume 2397, Optoelectronic Integrated Circuit Materials, Physics, and Devices; (1995) https://doi.org/10.1117/12.206893
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

Acceptor doped Quantum Well Intersubband Photodetectors with GaAs wells and lattice matched barriers of both ternary (In_0.49Ga_0.51P) and quaternary (In_0.62Ga_0.38As_0.22P_0.78) materials have been grown on semi-insulating GaAs substrates by Low Pressure Metal Organic Chemical Vapor Deposition. Mesa devices were fabricated and subjected to a series of tests to illuminate experimentally some of the detection capabilities of the lattice matched quaternary In_xGa_1-xAs_yP_1-y system with (0 <EQ x <EQ 0.52) and (0 <EQ y <EQ 1). The observed photoresponse cut-off wavelengths are in good agreement with the activation energies observed in the temperature dependence of the dark currents. Kronig-Penney calculations were used to model the intersubband transition energies.

Citation Download Citation

James R. Hoff, Erwan Bigan, Gail J. Brown, and Manijeh Razeghi "Aluminum-free quantum well intersubband photodetectors with p-type GaAs wells and lattice-matched ternary and quaternary barriers", Proc. SPIE 2397, Optoelectronic Integrated Circuit Materials, Physics, and Devices, (24 April 1995); https://doi.org/10.1117/12.206893

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