Journal
BIOSENSORS-BASEL
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/bios12010027
Keywords
surface plasmon resonance; biosensor; PtSe2; waveguide
Funding
- National Natural Science Foundation of China [61827819]
- Research Fund of Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology [2020B1212030010]
- Research Fund of Guangdong Provincial Key Laboratory of Semiconductor Micro Display [2020B121202003]
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PtSe2 is used to modify traditional SPR biosensors, and a metal-Si-metal waveguide structure is proposed to further improve the performance of the biosensor. The highest sensitivity was achieved with the BK7-Au-Si-Au-PtSe2 (2 nm) biosensor structure.
PtSe2 as a novel TMDCs material is used to modify the traditional SPR biosensors to improve the performance. On this basis, this research proposes a metal-Si-metal waveguide structure to further improve the performance of the biosensor. In this study, we not only studied the effects of waveguide structures containing different metals on the performance of biosensor, but also discussed the performance change of the biosensor with the change of PtSe2 thickness. After the final optimization, a BK7-Au-Si-Au-PtSe2 (2 nm) biosensor structure achieved the highest sensitivity of 193.8 degrees/RIU. This work provides a new development idea for the study of SPR biosensors with waveguide structures in the future.
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