Nonwetting and optical properties of BN nanosheet films
Nonwetting and optical properties of BN nanosheet films
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DOI：
10.1680/si.12.00007
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发表时间：
2013-03
影响因子：
3.5
通讯作者：
A. Pakdel;Y. Bando;D. Shtansky;D. Golberg
中科院分区：
文献类型：
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作者：
A. Pakdel;Y. Bando;D. Shtansky;D. Golberg
本研究首先简要讨论了在硅/二氧化硅衬底上高温化学气相沉积合成透明氮化硼纳米片薄膜。致密的纳米片垂直于衬底表面生长，并且它们中的大多数具有小于5 nm的厚度。紫外-可见光谱测量表明纳米片具有宽的光学带隙，其禁带宽度为1.56eV，阴极发光光谱显示其在紫外区具有较强的发光发射。纳米粗糙的表面形貌使薄膜具有非润湿性和自清洁特性，水接触角达到153°。这种透明的超疏水膜可用于制备用于光电子应用的非润湿紫外光发射表面、海洋船舶或油-水分离设备的表面。
This study begins with a brief discussion on the high-temperature chemical vapor deposition synthesis of transparent boron nitride nanosheet films on silicon/silicon dioxide substrates. The compact nanosheets grew perpendicular to the substrate surface, and the majority of them had thicknesses of less than 5 nm. Ultraviolet-visible spectroscopy measurements demonstrated a wide optical band gap of ∼5·6 eV of nanosheets, and cathodoluminescence spectroscopy showed their strong luminescence emission in the ultraviolet region. The nanorough surface morphology of the films induced nonwetting and self-cleaning features with water-contact angles reaching ∼153°. Such transparent superhydrophobic films can be utilized for the preparation of nonwetting ultraviolet light-emitting surfaces for optoelectronics applications, antifouling surfaces on marine vessels or oil–water separation equipments.