Properties of phosphorene are intensively researched by many research groups since it was discovered in 2014. This new 2D material has a direct band-gap, depending on the number of layers (0.3 eV for bulk to 2.0 eV for monolayer) similar to MoS2. In this paper, we report layer-by-layer (LbL) deposition method to deposit a few layers of phosphorene film on the substrate, and successfully fabricate phosphorene field effect transistor (FET) with LbL black phosphorus (BP) film. By using the FET characteristics of the device, we fabricate biosensors with Poly-L-lysine (PLL) linker molecules and Alpha-fetoprotein (AFP) antibody to detect different concentration of AFP antigen (0.1 ppb to 1 ppm). The results indicate that BP can be a promising material for biosensing applications.
|Original language||English (US)|
|Title of host publication||Advanced Manufacturing|
|Publisher||American Society of Mechanical Engineers (ASME)|
|State||Published - 2017|
|Event||ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017 - Tampa, United States|
Duration: Nov 3 2017 → Nov 9 2017
|Name||ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)|
|Other||ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017|
|Period||11/3/17 → 11/9/17|
Bibliographical noteFunding Information:
The authors acknowledge the assistance of fabrication and characterization from Minnesota Nano Center and the Characterization Facility at the University of Minnesota. The authors also thank Handol Lee for the NTA measurement and discussions.
Copyright © 2017 ASME.