Publicaciones 2011-2020

@article{RN399,
title = {Vibrational and Optical Properties of Czts Derivatives for Photovoltaic Applications: Synthesis of Cu2znsn1-Xgexs2se2 Compounds},
author = { C. Pinto and F. Lopez and A. Gald\'{a}mez and P. Barahona and S. Moris},
url = {/brokenurl#<Go to ISI>://WOS:000448954400011},
doi = {10.1016/j.solidstatesciences.2018.09.005},
issn = {1293-2558},
year = {2018},
date = {2018-01-01},
journal = {Solid State Sciences},
volume = {85},
pages = {76-82},
abstract = {Herein, we report the vibrational and optical properties of new Cu2ZnSn1-xGexS2Se2 solid solutions prepared by isomorphic substitution of a fraction of Se by S in Cu2ZnSn1-xGexSe4 (CZTGeSe) through ceramic method. The Raman spectra and x-ray diffraction analysis on samples confirms that they crystallize in Kesterite-type structure. The Raman peaks were analyzed by fitting of the spectra allowing identification the vibrational modes by comparison with experimental and theoretical data from CZTGeSe and CZTGeS end-members. The dependency between the amount of cation and chalcogen substituent in optical characterization shows band gap around of 1.36 eV, close to the optimum value for solar cells with high efficiency.},
keywords = {analysis, band-gap, cu2znsns4, czts, method, nanocrystals, nanoparticles, raman raman-scattering scattering, single-crystals, solar-cells, spectroscopy spray-pyrolysis},
pubstate = {published},
tppubtype = {article}
}

@article{RN148,
title = {Electrical Behavior of a Cu2fe0.4co0.6sns4 Ceramic},
author = { F. Lopez-Vergara and A. Gald\'{a}mez and V. Manriquez},
url = {/brokenurl#<Go to ISI>://WOS:000331238800047},
doi = {10.4067/S0717-97072013000400051},
issn = {0717-9707},
year = {2013},
date = {2013-01-01},
journal = {Journal of the Chilean Chemical Society},
volume = {58},
number = {4},
pages = {2131-2135},
abstract = {The solid solutions Cu2Fe1-XCoXSnS4, with stannite-type structure are stable up to about 800 degrees C. The electrical properties of the Cu2Fe0.4Co0.6SnS4 ceramic were investigated by complex impedance. The real and imaginary dielectric permittivity dependence with the temperature were measured between 10kHz and 1 MHz in temperature range 77-280K, finding that the ceramic present the characteristics behavior of a dielectric relaxation between 100 and 250 K, with a maximum at approximately 200 K. The electric permittivity found has orders of magnitude between 102 and 103. A space charge polarization mechanism is suggested to explain the observed electric relaxation.},
keywords = {crystals, dielectric quaternary relaxation, solar-cells, solid-solutions, stannite stannite, sulfides},
pubstate = {published},
tppubtype = {article}
}

@article{RN147,
title = {Cu2mn1-Xcoxsns4: Novel Kesterite Type Solid Solutions},
author = { F. Lopez-Vergara and A. Gald\'{a}mez and V. Manriquez and P. Barahona and O. Pena},
url = {/brokenurl#<Go to ISI>://WOS:000314320800056},
doi = {10.1016/j.jssc.2012.10.026},
issn = {0022-4596},
year = {2013},
date = {2013-01-01},
journal = {Journal of Solid State Chemistry},
volume = {198},
pages = {386-391},
publisher = {2012 Published by Elsevier Inc.},
abstract = {A new family of Cu2Mn1-xCoxSnS4 chalcogenides has been synthesized by conventional solid-state reactions at 850 degrees C. The reactions products were characterized by powder X-ray diffraction (XRD), energy-dispersive X-ray analysis (SEM-EDS), Raman spectroscopy and magnetic susceptibility. The crystal structures of two members of the solid solution series Cu2Mn0.4Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 have been determined by single-crystal X-ray diffraction. Both phases crystallize in the tetragonal kesterite-type structure (space group I (4) over bar). The distortions of the tetrahedral volume of Cu2Mn0.4 Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 were calculated and compared with the corresponding differences in the Cu2MnSnS4 (stannite-type) end-member. The compounds show nearly the same Raman spectral features. Temperature-dependent magnetization measurements (ZFC/FC) and high-temperature susceptibility indicate that these solid solutions are antiferromagnetic.},
keywords = {alloys, chalcogenide, chalcogenides, crystal crystal-structures, gap, kesterite, mixed-crystals, series, solar-cells, solution stannite, structure, synthesis, tetrahedra volumes, zn},
pubstate = {published},
tppubtype = {article}
}