H. Cánepa
La Salle University
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Publication
Featured researches published by H. Cánepa.
Journal of Applied Physics | 2002
Myriam H. Aguirre; H. Cánepa; Noemí E. Walsöe de Reca
HgCdTe (MCT) is an important semiconductor material used for infrared photovoltaic detectors. Although ion implantation is a widely used technique in the manufacture of devices based on MCT to obtain n/p junctions, a detailed understanding of the n-type behavior of the unannealed damage region has not yet been established. In this work, n/p junctions were formed by Ar++ implantation on MCT (111) grown by the isothermal vapor phase epitaxy method. Structural damage after implantation for different implantation doses (1013, 1014, and 1015 Ar++/cm2) was evaluated by transmission electron microscopy. At high doses, damage distribution exhibits a double region of defects. These were mainly vacancy dislocation loops and lines in the first region, whereas the second zone exhibited small dislocation loops. The observed n-type behavior after implantation was attributed to the generation and diffusion of Hg from the damaged region.
Journal of Physics: Conference Series | 2009
A.B. Trigubó; Myriam H. Aguirre; M. C. Di Stefano; Amparo Martínez; R. D'Elía; H. Cánepa; E. Heredia
Tubular furnaces were designed and built to obtain single crystalline ZnTe and ZnSe ingots using respectively physical and chemical transport methods. Different temperature profiles and growth rates were analyzed in order to optimize the necessary crystalline quality for device development. Optical and scanning electron micrographs of the corrosion figures produced by chemical etching were used to obtain the dislocation density and the misorientation between adjacent subgrains in ZnTe and ZnSe wafers. Structural quality of the single crystalline material was determined by transmission electronic microscopy. Optical transmittance was measured by infrared transmission spectrometry and the resulting values were compared to commercial samples.
Journal of Crystal Growth | 2003
Myriam H. Aguirre; H. Cánepa; Noemí E. Walsöe de Reca
Abstract Ordered structures, CuPt and CuAu I types in HgCdTe are reported for the first time. Hg 1− x Cd x Te thin crystals were grown by isothermal vapour phase epitaxy (ISOVPE) method on a CdTe substrate and they were observed by transmission electron microscopy (TEM) in planar view and cross-sectional geometries. Two variants of CuPt-type ordered structure were found in different microdomain sets on HgCdTe. Another superstructure observed was the CuAu I-type coexisting with CuPt domain structure.
Thin Solid Films | 2008
Ricardo E. Marotti; C.D. Bojorge; Esteban Broitman; H. Cánepa; J.A. Badán; Enrique A. Dalchiele; Andrew J. Gellman
Physica Status Solidi (a) | 2011
Claudia D. Bojorge; Vladimir R. Kent; Erika Teliz; H. Cánepa; Rodrigo Henríquez; H. Gómez; Ricardo E. Marotti; Enrique A. Dalchiele
Crystal Research and Technology | 2010
A.B. Trigubó; M. C. Di Stefano; U. Gilabert; Ana María Martínez; R. D'Elía; H. Cánepa; E. Heredia; Myriam H. Aguirre
Procedia Materials Science | 2012
Claudia D. Bojorge; M.F. Bianchetti; N.A. Gómez; N.E. Walsöe de Reca; H. Cánepa
Superficies y vacío | 2007
A.B. Trigubó; M.C. Di Stefano; R. D'Elía; H. Cánepa; E. Heredia; Myriam H. Aguirre
Procedia Materials Science | 2015
Claudia D. Bojorge; M.F. Bianchetti; H. Cánepa; Noemí E. Walsöe de Reca
Archive | 2015
Noemi Elisabeth Walse De Reca; H. Cánepa; Myriam H. Aguirre; E. Heredia; Ulises Gilabert; A.B. Trigubó; Raul Delia