News Column

Madrid Polytechnic University Details Findings in Solar Energy

June 27, 2014

By a News Reporter-Staff News Editor at Energy Weekly News -- Fresh data on Solar Energy are presented in a new report. According to news reporting originating from Madrid, Spain, by VerticalNews editors, the research stated, "The substitution of cation atoms by V, Cr and It in the natural and synthetic quaternary Cu2ZnSnS4 semiconductor is analyzed using first-principles methods. In most of the substitutions, the electronic structure of these modified CZTS is characterized for intermediate bands with different occupation and position within of the energy band gap."

Our news editors obtained a quote from the research from Madrid Polytechnic University, "A study of the symmetry and composition of these intermediate bands is carried out for all substitutions. These bands permit additional photon absorption and emission channels depending on their occupation. The optical properties are obtained and analyzed. The absorption coefficients are split into contributions from the different absorption channels and from the inter- and intra-atomic components. The sub bandgap transitions are significant in many cases because the anion states contribute to the valence, conduction and intermediates bands."

According to the news editors, the research concluded: "These properties could therefore be used for novel optoelectronic devices."

For more information on this research see: Electronic and optical properties of substitutional V, Cr and Ir impurities in Cu2ZnSnS4. Solar Energy Materials and Solar Cells, 2014;125():8-13. Solar Energy Materials and Solar Cells can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier -; Solar Energy Materials and Solar Cells -

The news editors report that additional information may be obtained by contacting C. Tablero, Madrid Polytechnic University, ETSI Telecomun, Inst Energia Solar, E-28040 Madrid, Spain.

Keywords for this news article include: Spain, Madrid, Europe, Solar Energy

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Source: Energy Weekly News

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