Crypto primitive of MOCVD MoS2 transistors for highly secured physical unclonable functions

Bangjie Shao, Tsz Hin Choy, Feichi Zhou, Jiewei Chen, Cong Wang, Yong Ju Park, Jong Hyun Ahn, Yang Chai

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Physically unclonable crypto primitives have potential applications for anti-counterfeiting, identification, and authentication, which are clone proof and resistant to variously physical attack. Conventional physical unclonable function (PUF) based on Si complementary metal-oxide-semiconductor (CMOS) technologies greatly suffers from entropy loss and bit instability due to noise sensitivity. Here we grow atomically thick MoS2 thin film and fabricate field-effect transistors (FETs). The inherently physical randomness of MoS2 transistors from materials growth and device fabrication process makes it appropriate for the application of PUF device. We perform electrical characterizations of MoS2 FETs, collect the data from 448 devices, and generate PUF keys by splitting drain current at specific levels to evaluate the response performance. Proper selection of splitting threshold enables to generate binary, ternary, and double binary keys. The generated PUF keys exhibit good randomness and uniqueness, providing a possibility for harvesting highly secured PUF devices with two-dimensional materials. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1784-1788
Number of pages5
JournalNano Research
Issue number6
Publication statusPublished - 2021 Jun

Bibliographical note

Funding Information:
This work is supported by Research Grant Council of Hong Kong (PolyU 152016/17E) and the Hong Kong Polytechnic University (G-SB79). J.-H. A. acknowledges the support from the National Research Foundation of Korea (NRF-2015R1A3A2066337).

Publisher Copyright:
© 2020, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Crypto primitive of MOCVD MoS2 transistors for highly secured physical unclonable functions'. Together they form a unique fingerprint.

Cite this