2 research outputs found
CTZS Thin Films Grown by a Sequential Deposition of Precursors
A comparative study of the structural, optical and morphological properties
of Cu2ZnSnS4 (CZTS) thin films prepared by two different techniques was
performed. One consists of sequential evaporation of the elemental metallic
precursors under a flux of sulphur supplied by evaporation from an effusion
cell (physical vapor deposition-PVD) and the second one is a solution-based
chemical route where thin layers of CuS, SnS and ZnS are deposited sequentially
by diffusion membrane- assisted chemical bath deposition techniques; the
membranes are used to optimize the kinetic growth through a moderate control of
the release of the metal into CBD solution by osmosis. The present comparative
study is helpful to the synthesis of kesterite nanostructured thin films.Comment: Published 201
S铆ntesis y caracterizaci贸n del compuesto cu2snse3 como precursor de pel铆culas delgadas aplicadas en celdas solares
El prop贸sito de este trabajo es contribuir al desarrollo de materiales usados en la fabricaci贸n de celdas solares basadas en pel铆culas en compuestos con estructura tipo kesterita que est谩n siendo ampliamente investigadas debido a que poseen excelentes propiedades fotovoltaicas y sus elementos precursores son no t贸xicos, de bajo costo y abundantes en la naturaleza. Se presentan detalles de la s铆ntesis y optimizaci贸n de las propiedades 贸pticas y estructurales del compuesto ternario Cu2SnSe3 (CTSe) que es empleado como precursor en la s铆ntesis del compuesto Cu2ZnSnSe4. El compuesto CTSe es formado a trav茅s de una reacci贸n en estado s贸lido de sus precursores met谩licos evaporadossecuencialmente en presencia de selenio elemental, en un proceso de dos etapas. La optimizaci贸n de las propiedades del compuesto CTSe se realiz贸 estudiando el efecto de los par谩metros de s铆ntesis sobre las propiedades 贸pticas, el茅ctricas y estructurales a trav茅s de medidas de transmitancia espectral, conductividad el茅ctrica y difracci贸n de rayos-x. Los resultados indicaron que este tipo de compuestos crecen con estructura c煤bica y presentan un gap 贸ptico de 1,6 eV.The purpose of this paper is to contribute to the development of materials used in the fabrication of solar cells based on Kesterite type compounds which are being widely investigated because they possess excellent photovoltaic properties and their precursor elements are nontoxic, inexpensive and abundant in nature. We present details of the synthesis and optimization of optical and structural properties of the ternary Cu2SnSe3 (CTSe) compound which is used as a precursor in the synthesis of the Cu2ZnSnSe4. The CTSe compound is formed by a solid state reaction of the metal precursors sequentially evaporated in the presence of elemental selenium, in a two stage process. The optimization of the properties of the CTSe was achieved studying the e茅ct of synthesis parameters on optical, electrical and structural properties through spectral transmittance, electrical conductivity and X-ray diffraction measurements. The results indicated that these compounds grow with cubic structure and have an optical bandgap of 1.6 eV