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The surface potential of Zn 1−x Mg x O/ZnO heterostructure grown by radical source molecular beam epitaxy was measured by Kelvin force microscopy (KFM). A clear correlation was observed between the topographic image and the surface potential of Zn 0.56 Mg 0.44 O/ZnO heterostructure. The potential area around the surface pits was about 60mV lower than that of the surrounding...
Effectiveness of the infrared reflection–absorption spectroscopy (IR-RAS) using transparent electrodes made of Ga-doped ZnO as metal substrates has been demonstrated. For a merocyanine dye with and without a metallic cation, differences in the IR-RAS spectrum have been clearly observed, even when the quantity of the material is restricted to the monolayer level. Referring to the visible transmission...
The built-in potential, carrier collection and eventually the conversion efficiency of the Cu(In,Ga)Se2-based solar cell were calculated for the best performance as a function of doping concentrations coupled with the arrangement of the junction location. The results were illustrated as contour maps on donor-acceptor concentration coordinates. It was shown that the conversion efficiency map becomes...
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