Enhancement of Photoluminescence in MoS2 on Ag Nanowires due to the Surface Plasmon Effect

• Published in: Journal of the Korean Physical Society Vol. 75; no. 10; pp. 801 - 805
• Main Authors: An, Sung-Jin, Park, Chulho, Lee, Chanwoo, Yang, Kihyuk, Jeong, Byeong Geun, Yu, Hyang Mi, Park, Dae Young, Jeong, Mun Seok, Lee, Seung Mi
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.11.2019; Springer Nature B.V; 한국물리학회
• Subjects: Energy gap; Mathematical and Computational Physics; Molybdenum disulfide; Nanowires; Optical properties; Optoelectronic devices; Particle and Nuclear Physics; Photoluminescence; Physics; Physics and Astronomy; Silver; Theoretical; Transition metal compounds; 물리학; Surface plasmon; Molybdenum disulfide; Silver nanowire
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.75.801

Monolayer (ML) molybdenum disulfide (MoS 2 ) is a promising material for next-generation optoelectronic applications because MoS 2 exhibits remarkable electronic and optical properties owing to its flexibility and direct bandgap. Despite these outstanding properties, MoS 2 has limitations in fabricating optoelectronic devices because of its low quantum yield. To overcome these limitations, we propose a photoluminescence (PL) enhancement technique using a surface plasmon effect induced by transferring ML MoS 2 onto Ag nanowires (NWs). We observed the surface-enhanced PL signals from ML MoS 2 on Ag NWs and investigated the effect of the diameter of the latter. Furthermore, we explored the origin of efficient PL enhancement using Ag NWs through theoretical simulations. Our experimental and theoretical studies are useful for the application of ML transition-metal dichalcogenides in flexible nano-optoelectronics.