• Nguyen Van Sau Tra Vinh University, Viet Nam,
  • Ma Thai Hoa Tra Vinh University, ,
  • Nguyen Xuan Thi Diem Trinh Tra Vinh University, Viet Nam,
  • Nguyen Tan Tai Tra Vinh University, Viet Nam,




Combination, Optical sensor, Sensitivity, Surface plasmon resonance.


This paper simulates an optical sensor utilizing a prism based on surface plasmon resonance (SPR). The simulations combine a layer of Au and an additional layer of different materials: aluminum arsenide (AlAs), poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), zinc oxide (ZnO), and polydimethylsiloxane (PDMS) for SPR excitation. The simulations show that a sensor based on a combination of Au/PEDOT:PSS layers with thicknesses of 40 nm and 5 nm, respectively, offers a sensor sensitivity of 186.07°/RIU, which is 1.2 times better than that of a sensor using only a thin Au layer. The enhancement in sensor sensitivity offers advantages for early detection of small concentrations of bacteria in biomedical and chemical applications.


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Volume and Issues


Natural Sciences and Technology

How to Cite

Sau, N. V., Hoa, M. T., Trinh, N. X. T. D., & Tai, N. T. (2021). ENHANCED SENSITIVITY OF SURFACE PLASMON RESONANCE SENSOR BASED ON COMBINATION OF Au/PEDOT:PSS NANOLAYERS. Dalat University Journal of Science, 11(1), 56-67. https://doi.org/10.37569/DalatUniversity.11.1.775(2021)