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Pyramid-like Gold Electrodeposit Formation in the Stranski- Krastanov Mode

机译：Stranski-Krastanov模式下的金字塔状金电沉积形成

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摘要

The Sranski-Krastanov (S-K) mode transition in gold electrodeposition using a sodium disulfitoaurate (I) solution was investigated. After a smooth gold thin film was grown on an Indium Tin Oxide (ITO) glass, a pyramid-like gold electrodeposit emerged on the smooth gold thin film. The pyramid-like gold electrodeposit showed a truncated pyramid-like configuration comprising four (111) planes. A critical film thickness at which the pyramid-like gold electrodeposit appears was found to be dependent on temperature. Texture coefficients of the gold thin film determined by x-ray diffraction (XRD) reveal that the S-K mode transition takes place when the (110) plane becomes dominant among the other crystallographic planes such as the (111), the (100), and the (311) plane. A scanning electron microscope (SEM) image shows that the pyramid-like gold electrodeposit formed at the critical film thickness may become a candidate for quantum dots.
机译：研究了使用二硫代金酸钠（I）溶液在金电沉积中的Sranski-Krastanov（S-K）模式转变。在氧化铟锡（ITO）玻璃上生长了光滑的金薄膜之后，在光滑的金薄膜上出现了金字塔状的金电沉积物。金字塔状的金电沉积物显示出包含四个（111）平面的截头金字塔状构型。发现金字塔状金电沉积出现的临界膜厚度取决于温度。通过X射线衍射（XRD）确定的金薄膜的织构系数表明，当（110）平面在（111），（100）和（100）和（311）飞机。扫描电子显微镜（SEM）图像显示，以临界膜厚度形成的金字塔状金电沉积物可能成为量子点的候选物。

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