TY - JOUR
T1 - Structural and electronic properties of (CdTe)1-x(In2Te3)x films grown by close-spaced vapor transport combined with free evaporation
AU - Zapata-Torres, M.
AU - Mascarenhas, Y. P.
AU - Santana-Aranda, M. A.
AU - Luyo-Alvarado, J.
AU - Meléndez-Lira, M.
AU - Zapata-Navarro, A.
AU - Jiménez-Sandoval, S.
AU - Castro-Rodriguez, R.
AU - Peña, J. L.
N1 - Funding Information:
We thank Marcela Guerrero, A.B. Soto, Laura López, Felipe Caballero, Jose A.L. Rocha, Jose G. Catarino, and Francisco Rodríguez M. for their helpful technical assistance. This work was partially supported by the Consejo Nacional de Ciencia y Tecnología-México. M.Z-T. acknowledges the financial support of Consejo Nacional de Ciencia y Tecnología-México for his postdoctoral training at Instituto de Fisica de São Carlos-Universidade de São Paulo. Y.P.M. acknowledges the Conselho Nacional de Pesquisas-Brasil for a research fellowship.
PY - 2000/8
Y1 - 2000/8
N2 - The structural and electronic properties of (CdTe)1-x(In2Te3)x thin films as a function of substrate temperature were studied using x-ray diffraction, energy dispersive x-ray analysis, and Raman, transmission, and modulated transmission spectroscopies. The films were grown by the close-spaced vapor transport technique combined with free evaporation; CdTe and In2Te3 were used as sources. From x-ray diffraction the presence of mixed phases and differences in composition were detected, and good correlation with Raman spectroscopy was found. Transmission spectroscopy suggested the possibility of a modulation of the band gap of the alloy from a value as low as 0.5 eV up to 1.5 eV. Single-phase films presented a direct band gap of around 1.15 eV, as obtained from modulated transmission measurements.
AB - The structural and electronic properties of (CdTe)1-x(In2Te3)x thin films as a function of substrate temperature were studied using x-ray diffraction, energy dispersive x-ray analysis, and Raman, transmission, and modulated transmission spectroscopies. The films were grown by the close-spaced vapor transport technique combined with free evaporation; CdTe and In2Te3 were used as sources. From x-ray diffraction the presence of mixed phases and differences in composition were detected, and good correlation with Raman spectroscopy was found. Transmission spectroscopy suggested the possibility of a modulation of the band gap of the alloy from a value as low as 0.5 eV up to 1.5 eV. Single-phase films presented a direct band gap of around 1.15 eV, as obtained from modulated transmission measurements.
UR - http://www.scopus.com/inward/record.url?scp=0034256165&partnerID=8YFLogxK
U2 - 10.1557/JMR.2000.0261
DO - 10.1557/JMR.2000.0261
M3 - Artículo
SN - 0884-2914
VL - 15
SP - 1811
EP - 1815
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 8
ER -