https://scholars.lib.ntu.edu.tw/handle/123456789/598355
標題: | Imprintable Au-based thin-film metallic glasses with different crystallinities for surface-enhanced Raman scattering | 作者: | Chen P.-J Hsueh C.-H. CHUN-HWAY HSUEH |
關鍵字: | Alumina;Aluminum oxide;Amorphous films;Amorphous silicon;Anodic oxidation;Copper compounds;Crystallinity;Finite difference time domain method;Glass;Morphology;Nanostructures;Optical properties;Raman scattering;Substrates;Supercooling;Surface scattering;Thin film solar cells;Thin films;As-deposited films;Cristallinity;Enhanced Raman scattering;Grain-boundaries;Magnetron co-sputtering;Periodic nanostructure;Raman intensities;Surface enhanced Raman;Thermal imprint;Thin film metallic glass;Grain boundaries | 公開日期: | 2021 | 卷: | 125 | 期: | 43 | 起(迄)頁: | 23983-23990 | 來源出版物: | Journal of Physical Chemistry C | 摘要: | The purpose of the present study was to fabricate a periodic nanostructure on Au-based thin-film metallic glasses (TFMGs) with different crystallinities for surface-enhanced Raman scattering (SERS) applications. To achieve this, fully amorphous Au-Cu-Si TFMGs were fabricated using magnetron co-sputtering, and thermal imprint was adopted to emboss the as-deposited film against a commercial anodic aluminum oxide template in the supercooled liquid region to develop the periodic nanostructure. For different crystallinities, the imprinted Au-Cu-Si TFMGs were heat treated at different temperatures. The morphology, crystallinity, dielectric properties, optical properties, and SERS effects were measured, and finite-difference time-domain simulations were performed to compare with the measured reflectance. It was found that Raman intensity decreased upon the initial crystallization of heat-treated amorphous film due to scattering at grain boundaries. However, the grain growth at higher heat treatment temperatures resulted in the reduction in grain boundary area, and the Raman intensity increased. ? 2021 American Chemical Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118806173&doi=10.1021%2facs.jpcc.1c07842&partnerID=40&md5=79c72b95cdce52afc048e0b04bbe9214 https://scholars.lib.ntu.edu.tw/handle/123456789/598355 |
ISSN: | 19327447 | DOI: | 10.1021/acs.jpcc.1c07842 |
顯示於: | 材料科學與工程學系 |
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