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GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs

Publication ,  Journal Article
Forghani, K; Guan, Y; Losurdo, M; Luo, G; Morgan, D; Babcock, SE; Brown, AS; Mawst, LJ; Kuech, TF
Published in: Applied Physics Letters
September 15, 2014

The growth and properties of alloys in the alternative quaternary alloy system GaAs1-y-zPyBizwere explored. This materials system allows simultaneous and independent tuning of lattice constant and band gap energy, Eg, over a wide range for potential near- and mid-infrared optoelectronic applications by adjusting y and z in GaAs1-y-zPyBiz. Highly tensile-strained, pseudomorphic films of GaAs1-yPywith a lattice mismatch strain of ∼1.2% served as the host for the subsequent addition of Bi. Lattice-matched alloy materials to GaAs were generated by holding y ∼ 3.3z in GaAs1- y- zPyBiz. Epitaxial films with both high Bi content, z ∼ 0.0854, and a smooth morphology were realized with measured band gap energies as low as 1.11-1.01 eV, lattice-matched to GaAs substrates. Density functional theory calculations are used to provide a predictive model for the band gap of GaAs1-y-zPyBizlattice-matched to GaAs.

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Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

September 15, 2014

Volume

105

Issue

11

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Forghani, K., Guan, Y., Losurdo, M., Luo, G., Morgan, D., Babcock, S. E., … Kuech, T. F. (2014). GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs. Applied Physics Letters, 105(11). https://doi.org/10.1063/1.4895116
Forghani, K., Y. Guan, M. Losurdo, G. Luo, D. Morgan, S. E. Babcock, A. S. Brown, L. J. Mawst, and T. F. Kuech. “GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs.” Applied Physics Letters 105, no. 11 (September 15, 2014). https://doi.org/10.1063/1.4895116.
Forghani K, Guan Y, Losurdo M, Luo G, Morgan D, Babcock SE, et al. GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs. Applied Physics Letters. 2014 Sep 15;105(11).
Forghani, K., et al. “GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs.” Applied Physics Letters, vol. 105, no. 11, Sept. 2014. Scopus, doi:10.1063/1.4895116.
Forghani K, Guan Y, Losurdo M, Luo G, Morgan D, Babcock SE, Brown AS, Mawst LJ, Kuech TF. GaAs1-y-zPyBiz, an alternative reduced band gap alloy system lattice-matched to GaAs. Applied Physics Letters. 2014 Sep 15;105(11).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

September 15, 2014

Volume

105

Issue

11

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences