Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Jan 19;8:1276. doi: 10.1038/s41598-018-19367-1

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

Three-terminal optoelectronic measurements in the MSM suspended MoS₂ PD. (a) I_DS-V_DS characteristic at varying V_G in dark. Inset shows I_DS-V_G characteristics from which an ON/OFF ratio was calculated to be ~10⁴ at V_DS = 2 V. (b) I_DS-V_G transfer characteristics for varying levels of P at V_DS = 2 V, from which a maximum μ_FE of ~42.7 cm²V⁻¹s⁻¹ was calculated at peak g_m ~ 0.36 μS based on Equation 5. (c) I_ph as a function of V_G to analyze the photocurrent generation mechanism, where the highest $ℛ$ was found at ~−8.5 V. The photogating effect (PGE) is also seen to be effective here since a shift in voltage of ~−1.1 V is seen and the shift to the left indicates p-type trap states. At the same time, the photoconductive effect (PCE) appears to be the dominant photocurrent generation mechanism since I_ph shifts up in the y direction⁴⁵. (d) I_ph as a function of V_G, the highest sensitivity is shown at V_G = −8.5 V where the conductance is the minimum. The inset shows $ℛ$ as a function of P at V_G = 0 V and −8.5 V, respectively for V_DS = 5 V. All the measurements where performed at 300 K and in vacuum.