Zhang Yongjun, Zhou Hailong, Liang Lijun
Center for Advanced Optoelectronic Materials, Key Laboratory of Novel Materials for Sensor of Zhejiang Province, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Zhejiang Sunflux Electron Co., Ltd., Shaoxing 311266, China.
Molecules. 2022 Jun 13;27(12):3805. doi: 10.3390/molecules27123805.
Ordered heterojunction nanocap arrays composed of the bilayer film Ag/ZnS were prepared onto ordered two-dimensional polystyrene bead arrays by magnetron control sputtering, and the surface morphologies were tuned by changing the ZnS thickness. When the ZnS thickness varied from 10 to 30 nm with a Ag thickness of 5 nm, the roughness of the bilayer film Ag/ZnS increased obviously. The UV-VIS spectra showed the shifted LSPR peaks with ZnS thickness, which was attributed to the changes of the electron density as confirmed by Hall effect analysis. SERS observations confirmed the charge transfer process for the varied electromagnetic couplings when the ZnS thickness changed.
通过磁控溅射在有序二维聚苯乙烯珠阵列上制备了由双层膜Ag/ZnS组成的有序异质结纳米帽阵列，并通过改变ZnS厚度来调节表面形貌。当Ag厚度为5 nm时，ZnS厚度从10 nm变化到30 nm，双层膜Ag/ZnS的粗糙度明显增加。紫外-可见光谱显示LSPR峰随ZnS厚度发生位移，这归因于霍尔效应分析所证实的电子密度变化。表面增强拉曼光谱观察证实了ZnS厚度改变时，不同电磁耦合的电荷转移过程。
