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We report the growth and characterization of the Zn1−xCdxTe1−yOy (ZnCdTeO) layers on ZnTe substrates by molecular beam epitaxy technique for the application of intermediate band solar cells. ZnCdTeO layers with a wide range of Cd and O contents of 0–0.7 and 0.005–0.02, respectively, were grown by changing Cd/(Cd+Zn) flux ratio and O radical supply. The decrease of the transition energy from valence...
Cu2SnSe3 (CTSe) thin films were fabricated by coevaporation on soda-tune glass substrates at the substrate temperature of 300 °C under rations Co Sd supply ratios. From X-ray diffraction ( XRD) analyses, diffraction peaks of CTSe with a cubic sphalerite structure were observed in all CTSe thin films. In addition, SnSe and SnSe2 phases were also detected in Sn-ricb CTSe thin films. On the other bands,...
Highly mismatched ZnTe1−xOx (ZnTeO) alloys have been grown by molecular beam epitaxy. X-ray diffraction (XRD) analyses showed that a single-phase ZnTeO layer were grown with a substitutional O composition x up to 1.34% on ZnTe(001) substrate in this experiments. Optical transitions associated with the lower (E−) and upper (E+) conduction subbands resulting from the anticrossing interaction between...
A low-cost transparent conducting oxide (TCO) suitable for terawatt-scale solar cells is reported. The zinc oxide TCO is prepared by spray pyrolysis deposition and is doped with an abundant group IIIB element, yttrium (ZnO:Y). The deposition was carried out at 475°C on quartz substrate. The dependence of the electrical, structural and optical properties of ZnO:Y on deposition and post-annealing conditions...
In this paper we propose a “build-up” approach for surface texturing on solar cells. By coating solar cells with a monolayer of dielectric microparticles, followed by a dielectric film with a thickness less than the height of the particles, a surface texture can be formed on almost any type of solar cells. More importantly, this texture is prepared by solution coatings, ensuring its low cost. Dielectric...
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