期刊
ELECTROCHEMICAL AND SOLID STATE LETTERS
卷 13, 期 3, 页码 K22-K25出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3274126
关键词
amorphous semiconductors; copper compounds; electrolytes; energy gap; gallium compounds; indium compounds; nanofabrication; nanowires; optical constants; photoconductivity; photoelectrochemistry; semiconductor growth; semiconductor quantum wires; solar cells; stoichiometry; ternary semiconductors; X-ray chemical analysis; X-ray diffraction
资金
- Universita di Palermo
In this work, we report some preliminary results concerning the fabrication of quaternary copper, indium, gallium, and selenium (CIGS) nanowires that were grown inside the channels of an anodic alumina membrane by one-step potentiostatic deposition at different applied potentials and room temperature. A tunable nanowire composition was achieved through a manipulation of the applied potential and electrolyte composition. X-ray diffraction analysis showed that nanowires, whose chemical composition was determined by energy-dispersive spectroscopy analysis, were amorphous. A composition of Cu(0.203)In(0.153)Ga(0.131)Se(0.513), very close to the stoichiometric value, was obtained. These nanostructures were also characterized by photoelectrochemical measurements: They showed a cathodic photocurrent and an optical gap of 1.55 eV.
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