Characterization of highly doped Ga 0.86 In 0.14 As 0.13 Sb0.87 grown by liquid phase epitaxy
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| Format: | Artículo científico |
| Langue: | en |
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Sociedad Mexicana de Física A.C.
2017
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| _version_ | 1876438542227341312 |
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| author | J. Díaz-Reyes |
| author_facet | J. Díaz-Reyes |
| contents | Characterization of highly doped Ga 0.86 In 0.14 As 0.13 Sb0.87 grown by liquid phase epitaxy J. Díaz-Reyes M. Galván-Arellano J.G. Mendoza-Alvarez J.S. Arias-Cerón J.L. Herrera-Pérez E. López-Cruz Física, Astronomía y Matemáticas Raman GaInAsSb semiconductors Liquid phase epitaxy growth Photoluminescence spectroscopy Ga 0 . 86 In 0 . 14 As 0 . 13 Sb 0 . 87 layers lattice-matched to (100) Te-GaSb have been grown using the liquid phase epitaxy technique under super- cooling conditions. N and p type layers were grown by adding tellurium or zinc in a wide range of molar fraction in the growth solution. By Raman spectroscopy, the structural quality of the epilayers was characterized. The Raman spectra show that the layers become more defective as the dopant molar fraction is increased, n - or p -type. Two main bands are observed in the Raman spectra centered at 230 and 245 cm − 1 that depend strongly on the incorporated dopant molar concentration (Te or Zn), which are assigned to the observed vibrational modes of GaAs-like and (GaSb+InAs)-like mixture. The low-temperature photoluminescence of n (or p )-type GaInAsSb was measured as function of dopant concentration added to the melt solution. The photoluminescence spectra were interpreted taking into account the nonparabolicity of the conduction (or valence) band. Both the band filled as well as band tailing effects due to Coulomb interaction of free carriers with ionized impurities and shrinkage due to exchange interaction between free carriers were considered in order to properly be taken into account for the observed features of the photoluminescence spectra. It is shown that the band-to-band transition energy can be used to estimate the free carrier concentration in GaInAsSb for a wide range of dopant concentration. 2017 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57050469009 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.1 Vol.63 |
| format | Artículo científico |
| id | redalyc_57050469009 |
| institution | Redalyc |
| language | en |
| publishDate | 2017 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Characterization of highly doped Ga 0.86 In 0.14 As 0.13 Sb0.87 grown by liquid phase epitaxy J. Díaz-Reyes Física, Astronomía y Matemáticas Raman GaInAsSb semiconductors Liquid phase epitaxy growth Photoluminescence spectroscopy Characterization of highly doped Ga 0.86 In 0.14 As 0.13 Sb0.87 grown by liquid phase epitaxy J. Díaz-Reyes M. Galván-Arellano J.G. Mendoza-Alvarez J.S. Arias-Cerón J.L. Herrera-Pérez E. López-Cruz Física, Astronomía y Matemáticas Raman GaInAsSb semiconductors Liquid phase epitaxy growth Photoluminescence spectroscopy Ga 0 . 86 In 0 . 14 As 0 . 13 Sb 0 . 87 layers lattice-matched to (100) Te-GaSb have been grown using the liquid phase epitaxy technique under super- cooling conditions. N and p type layers were grown by adding tellurium or zinc in a wide range of molar fraction in the growth solution. By Raman spectroscopy, the structural quality of the epilayers was characterized. The Raman spectra show that the layers become more defective as the dopant molar fraction is increased, n - or p -type. Two main bands are observed in the Raman spectra centered at 230 and 245 cm − 1 that depend strongly on the incorporated dopant molar concentration (Te or Zn), which are assigned to the observed vibrational modes of GaAs-like and (GaSb+InAs)-like mixture. The low-temperature photoluminescence of n (or p )-type GaInAsSb was measured as function of dopant concentration added to the melt solution. The photoluminescence spectra were interpreted taking into account the nonparabolicity of the conduction (or valence) band. Both the band filled as well as band tailing effects due to Coulomb interaction of free carriers with ionized impurities and shrinkage due to exchange interaction between free carriers were considered in order to properly be taken into account for the observed features of the photoluminescence spectra. It is shown that the band-to-band transition energy can be used to estimate the free carrier concentration in GaInAsSb for a wide range of dopant concentration. 2017 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57050469009 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.1 Vol.63 |
| title | Characterization of highly doped Ga 0.86 In 0.14 As 0.13 Sb0.87 grown by liquid phase epitaxy |
| topic | Física, Astronomía y Matemáticas Raman GaInAsSb semiconductors Liquid phase epitaxy growth Photoluminescence spectroscopy |
| url | https://www.redalyc.org/articulo.oa?id=57050469009 |