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Article

Sensitivity Enhancement of a Surface Plasmon Resonance with Tin Selenide (SnSe) Allotropes

1
International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technoloy of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2
Laboratory of Advanced Material Photonics (LAMPs), Shenzhen University, Shenzhen 518060, China
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(1), 173; https://doi.org/10.3390/s19010173
Received: 10 December 2018 / Revised: 29 December 2018 / Accepted: 3 January 2019 / Published: 5 January 2019
(This article belongs to the Special Issue Two-Dimensional Materials Based Sensors)
Single layers of tin selenide (SnSe), which have a similar structure as graphene and phosphorene, also show excellent optoelectronic properties, and have received much attention as a two-dimensional (2D) material beyond other 2D material family members. Surface plasmon resonance (SPR) sensors based on three monolayer SnSe allotropes are investigated with the transfer matrix method. The simulated results have indicated that the proposed SnSe-containing biochemical sensors are suitable to detect different types of analytes. Compared with the conventional Ag-only film biochemical sensor whose sensitivity is 116°/RIU, the sensitivities of these SnSe-based biochemical sensors containing α-SnSe, δ-SnSe, ε-SnSe, were obviously increased to 178°/RIU, 156°/RIU and 154°/RIU, respectively. The diverse biosensor sensitivities achieved with these three SnSe allotropes suggest that these 2D materials can adjust SPR sensor properties. View Full-Text
Keywords: SnSe allotrope; SPR sensor; high sensitivity SnSe allotrope; SPR sensor; high sensitivity
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MDPI and ACS Style

Dai, X.; Liang, Y.; Zhao, Y.; Gan, S.; Jia, Y.; Xiang, Y. Sensitivity Enhancement of a Surface Plasmon Resonance with Tin Selenide (SnSe) Allotropes. Sensors 2019, 19, 173. https://doi.org/10.3390/s19010173

AMA Style

Dai X, Liang Y, Zhao Y, Gan S, Jia Y, Xiang Y. Sensitivity Enhancement of a Surface Plasmon Resonance with Tin Selenide (SnSe) Allotropes. Sensors. 2019; 19(1):173. https://doi.org/10.3390/s19010173

Chicago/Turabian Style

Dai, Xiaoyu, Yanzhao Liang, Yuting Zhao, Shuaiwen Gan, Yue Jia, and Yuanjiang Xiang. 2019. "Sensitivity Enhancement of a Surface Plasmon Resonance with Tin Selenide (SnSe) Allotropes" Sensors 19, no. 1: 173. https://doi.org/10.3390/s19010173

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