Light and Shadow Effects in the Submerged Photolytic Synthesis of Micropatterned CuO Nanoflowers and ZnO Nanorods as Optoelectronic Surfaces,ACS Applied Nano Materials

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Light and Shadow Effects in the Submerged Photolytic Synthesis of Micropatterned CuO Nanoflowers and ZnO Nanorods as Optoelectronic Surfaces
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-24 , DOI: 10.1021/acsanm.9b02385
Junichi Mizuno ₁ , Melbert Jeem ₂ , Yuki Takahashi ₁ , Masaya Kawamoto ₁ , Kiyotaka Asakura ₃ , Seiichi Watanabe ₄

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A facile surface patterning method using low temperature and atmospheric pressure is desirable for optoelectronic device fabrication. In this work, we demonstrate a fascinating dynamic fabrication method using light and shadow effects in submerged photolytic synthesis (L&S patterning) for CuO nanoflowers (NFs) and ZnO nanorods (NRs) surface micropatterning. In addition, galvanic reactions using appropriate metals can efficiently enhance NFs and NRs patterning. The principal of illumination effect was studied by photoelectrochemical measurements. Light induces a photoassisted localized cathodic reaction on the oxide surface through photoexcited electrons. Simultaneously, the shadowing effect from using a metal mesh prevents oxide formation, while galvanic reactions take place on the light-exposed area. This dynamic method enables facile and efficient surface patterning in water. Photoemission electron microscopy (PEEM) images and cathodoluminescence in SEM (SEM-CL) spectral analyses prove the useful electron and light emission properties of the products, respectively. A detailed discussion of their optoelectrical properties is given. The environmentally benign L&S patterning method does not require any organic catalyst to function in neutral water. Thus, this method has opened the possibility for facile, futuristic, one-pot, one-step, large-scale optoelectronic device fabrication.

中文翻译：

微图案化的CuO纳米花和ZnO纳米棒作为光电子表面的水下光解合成中的光影效应。

使用低温和大气压的简便的表面构图方法对于光电器件制造是理想的。在这项工作中，我们演示了一种有趣的动态制造方法，该方法利用光影效应在CuO纳米花（NFs）和ZnO纳米棒（NRs）表面微图案化的浸没光解合成（L＆S图案）中进行。此外，使用适当的金属进行电反应可以有效增强NF和NR的图案。通过光电化学测量研究了照明效果的原理。光通过光激发电子在氧化物表面上引起光辅助的局部阴极反应。同时，使用金属网的遮蔽效果可防止氧化物形成，而在曝光区域会发生电化反应。这种动态方法可以在水中轻松有效地进行表面构图。光电发射电子显微镜（PEEM）图像和SEM中的阴极发光（SEM-CL）光谱分析证明了该产品有用的电子和发光特性。详细讨论了它们的光电性能。环保的L＆S图案化方法不需要任何有机催化剂即可在中性水中发挥作用。因此，该方法为方便，未来，单罐，一步，大规模的光电器件制造开辟了可能性。详细讨论了它们的光电性能。环保的L＆S图案化方法不需要任何有机催化剂即可在中性水中发挥作用。因此，该方法为方便，未来，单罐，一步，大规模的光电器件制造开辟了可能性。详细讨论了它们的光电性能。环保的L＆S图案化方法不需要任何有机催化剂即可在中性水中发挥作用。因此，该方法为方便，未来，单罐，一步，大规模的光电器件制造开辟了可能性。

更新日期：2020-01-24

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