Web-drive based source measure unit for automated evaluations of ionic liquid-gated MoS2 transistors

So Jeong Park, Dae Young Jeon, Young Sun Moon, Il Hoo Park, Gyu Tae Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


For reliable characterization of two-dimensional semiconducting devices and continuous monitoring in toxic environments, construction of an electrical characterization-based massive database using a portable source measure unit (SMU) with a WiFi connection is desirable. The web-drive based SMU using a microcontroller developed here exhibits superior voltage source performance (∼1 mV) and voltage/current measurement (∼0.15 mV/∼1 nA) capabilities, with automatic construction of a measurement database for online storage using web-drive based software, which can be applied for reliable electrical characterization. Electrical characterization of ionic liquid-gated MoS2 transistors was achieved with the designed SMU and showed results comparable with those obtained using a commercial semiconductor characterization system. Ionic liquid-gated transistors only require a small gate bias (∼1.5 V) for on-state operation because of the high gate capacitance originating from the thin dielectric layer constructed of an electrical double layer, which makes the device a promising candidate for low power consumption applications. Finally, several electrical parameters of the ionic liquid-gated transistor were extracted from the datasets and uploaded to the web-drive.

Original languageEnglish
Article number124708
JournalReview of Scientific Instruments
Issue number12
Publication statusPublished - 2019 Dec 1

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant Nos. 2016R1A6A3A11933511, NRF-2017M3A7B4049167, and NRF-2017M3D9A1073924) and a Korea University Grant.

Publisher Copyright:
© 2019 Author(s).

ASJC Scopus subject areas

  • Instrumentation


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