Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films

Mo-48.2% Ag films were fabricated by direct current (DC) magnetron sputtering and annealed in an argon atmosphere. The effects of annealing on the surface morphology, resistivity and surface-enhanced Raman scattering (SERS) performance of Mo-48.2% Ag films were investigated. Results show a mass of p...

Full description

Bibliographic Details
Main Authors:	Haoliang Sun, Xinxin Lian, Yuanjiang Lv, Yuanhao Liu, Chao Xu, Jiwei Dai, Yilin Wu, Guangxin Wang
Format:	Article
Language:	English
Published:	MDPI AG 2020-09-01
Series:	Materials
Subjects:	Mo-48.2% Ag film anneal polyhedral Ag particles SERS
Online Access:	https://www.mdpi.com/1996-1944/13/18/4205

id	doaj-aac94f8994e94a32a1ec6a04756879dd
record_format	Article
spelling	doaj-aac94f8994e94a32a1ec6a04756879dd2020-11-25T02:53:54ZengMDPI AGMaterials1996-19442020-09-01134205420510.3390/ma13184205Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag FilmsHaoliang Sun0Xinxin Lian1Yuanjiang Lv2Yuanhao Liu3Chao Xu4Jiwei Dai5Yilin Wu6Guangxin Wang7School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaMo-48.2% Ag films were fabricated by direct current (DC) magnetron sputtering and annealed in an argon atmosphere. The effects of annealing on the surface morphology, resistivity and surface-enhanced Raman scattering (SERS) performance of Mo-48.2% Ag films were investigated. Results show a mass of polyhedral Ag particles grown on the annealed Mo-48.2% Ag films’ surface, which are different from that of as-deposited Mo-Ag film. Moreover, the thickness and the resistivity of Mo-48.2% Ag films gradually decrease as the annealing temperature increases. Furthermore, finite-difference time-domain (FDTD) simulations proved that the re-deposition Ag layer increases the “hot spots” between adjacent Ag nanoparticles, thereby greatly enhancing the local electromagnetic (EM) field. The Ag layer/annealed Mo-48.2% Ag films can identify crystal violet (CV) with concentration lower than 5 × 10<sup>−10</sup> M (1 mol/L = 1 M), which indicated that this novel type of particles/films can be applied as ultrasensitive SERS substrates.https://www.mdpi.com/1996-1944/13/18/4205Mo-48.2% Ag filmannealpolyhedral Ag particlesSERS
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Haoliang Sun Xinxin Lian Yuanjiang Lv Yuanhao Liu Chao Xu Jiwei Dai Yilin Wu Guangxin Wang
spellingShingle	Haoliang Sun Xinxin Lian Yuanjiang Lv Yuanhao Liu Chao Xu Jiwei Dai Yilin Wu Guangxin Wang Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films Materials Mo-48.2% Ag film anneal polyhedral Ag particles SERS
author_facet	Haoliang Sun Xinxin Lian Yuanjiang Lv Yuanhao Liu Chao Xu Jiwei Dai Yilin Wu Guangxin Wang
author_sort	Haoliang Sun
title	Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films
title_short	Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films
title_full	Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films
title_fullStr	Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films
title_full_unstemmed	Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films
title_sort	effect of annealing on the microstructure and sers performance of mo-48.2% ag films
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2020-09-01
description	Mo-48.2% Ag films were fabricated by direct current (DC) magnetron sputtering and annealed in an argon atmosphere. The effects of annealing on the surface morphology, resistivity and surface-enhanced Raman scattering (SERS) performance of Mo-48.2% Ag films were investigated. Results show a mass of polyhedral Ag particles grown on the annealed Mo-48.2% Ag films’ surface, which are different from that of as-deposited Mo-Ag film. Moreover, the thickness and the resistivity of Mo-48.2% Ag films gradually decrease as the annealing temperature increases. Furthermore, finite-difference time-domain (FDTD) simulations proved that the re-deposition Ag layer increases the “hot spots” between adjacent Ag nanoparticles, thereby greatly enhancing the local electromagnetic (EM) field. The Ag layer/annealed Mo-48.2% Ag films can identify crystal violet (CV) with concentration lower than 5 × 10<sup>−10</sup> M (1 mol/L = 1 M), which indicated that this novel type of particles/films can be applied as ultrasensitive SERS substrates.
topic	Mo-48.2% Ag film anneal polyhedral Ag particles SERS
url	https://www.mdpi.com/1996-1944/13/18/4205
work_keys_str_mv	AT haoliangsun effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT xinxinlian effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT yuanjianglv effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT yuanhaoliu effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT chaoxu effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT jiweidai effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT yilinwu effectofannealingonthemicrostructureandsersperformanceofmo482agfilms AT guangxinwang effectofannealingonthemicrostructureandsersperformanceofmo482agfilms
_version_	1724723649006534656

Effect of Annealing on the Microstructure and SERS Performance of Mo-48.2% Ag Films

Similar Items