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首页> 外文期刊>Applied Surface Science >Photoluminescence of thermal-annealed nanocolumnar ZnO thin films grown by electrodeposition
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Photoluminescence of thermal-annealed nanocolumnar ZnO thin films grown by electrodeposition

机译：电沉积生长的热退火纳米柱状ZnO薄膜的光致发光

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摘要

Nanostructured zinc oxide thin films formed by partially oriented hexagonal columns with dimensions of about 100 nm x 300 nm have been prepared by cathodic electrodeposition on conducting glass substrates. After subsequent thermal annealing in air at different temperatures (100-500℃), structural information on the films was obtained by means of non-resonant Raman spectroscopy. Increasing the annealing temperature leads to a higher degree of crystallinity. The photo-luminescence activity of the samples (at low temperature) also improves for increasing annealing temperatures in two ways: increasing the intensity of the near-band edge emission and decreasing the width of the excitonic peak. No emission band in the visible is detected, which attests the high quality of the ZnO nanocolumnar films.
机译：通过在导电玻璃基板上进行阴极电沉积，已经制备了由尺寸约100nm x 300nm的部分取向的六方柱形成的纳米结构的氧化锌薄膜。随后在不同温度（100-500℃）的空气中进行热退火后，通过非共振拉曼光谱法获得了薄膜的结构信息。升高退火温度导致较高的结晶度。样品的光致发光活性（在低温下）还可以通过两种方式提高退火温度：增加近带边缘发射的强度和减小激子峰的宽度。没有检测到可见光中的发射带，这证明了ZnO纳米柱膜的高质量。

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