Surface plasmon resonance induced charge transfer effect on the Ag-ZnSe-PATP system

Qi Chu; Bingbing Han; Yang Jin; Shuang Guo; Sila Jin; Eungyeong Park; Lei Chen; Young Mee Jung

doi:10.1016/j.saa.2020.119167

Surface plasmon resonance induced charge transfer effect on the Ag-ZnSe-PATP system

Spectrochim Acta A Mol Biomol Spectrosc. 2021 Mar 5:248:119167. doi: 10.1016/j.saa.2020.119167. Epub 2020 Nov 16.

Authors

Qi Chu¹, Bingbing Han¹, Yang Jin¹, Shuang Guo², Sila Jin², Eungyeong Park², Lei Chen³, Young Mee Jung⁴

Affiliations

¹ Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, PR China.
² Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea.
³ Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, PR China. Electronic address: chenlei@jlnu.edu.cn.
⁴ Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Republic of Korea. Electronic address: ymjung@kangwon.ac.kr.

PMID: 33257248
DOI: 10.1016/j.saa.2020.119167

Abstract

This work demonstrated the effect of charge transfer (CT) induced by metal surface plasmon resonance (SPR) on surface-enhanced Raman scattering (SERS). We designed an Ag-ZnSe nanostructure and introduced p-aminothiophenol (PATP) molecules to form an Ag-ZnSe-PATP system. The proposed method compensates for the CT difficulty in wide-band-gap semiconductors, which was initiated by the SPR of Ag. The Raman intensity is enhanced differently depending on the action of excitation light of different wavelengths. The concept of the CT degree was introduced to analyze this intriguing phenomenon. The system constructed in this work combines the electromagnetic enhancement mechanism and the chemical enhancement mechanism, which helps further understand the SERS mechanism and provides important references for SERS research on wide-band-gap semiconductors.

Keywords: Ag-ZnSe-PATP system; Charge transfer (CT); Surface plasmon resonance (SPR); Surface-enhanced Raman scattering (SERS); Wide-band-gap semiconductors.

Publication types

Review