High performance black phosphorus field-effect transistors with vacuum-annealed low-resistance Ohmic contact

Hyunik Park, Jinho Bae, Ji Hyun Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


Layered black phosphorus (BP) exhibits desirable properties for nano-(opto)electronic device applications such as atomically thin body, direct bandgap (0.3 eV for bulk and 2.0 eV for monolayer), high carrier mobility of 1,000 cm2/V·s, and current on/off ratio of 105, which trigger intensive studies since its rediscovery. [1]-[3] However, high contact resistance caused by the formation of Schottky barrier and contamination at the metal-layered BP interface poses challenges in applying BP in device applications.[4] This problem becomes more serious for short-channel devices as the contact resistance is more dominant than the channel resistance, thereby, the device performance is limited by the contact resistance. Thermal annealing has been used as a promising technique for improving the contact properties in electronic devices. However, BP is vulnerable to the ambient molecules, especially in the elevated temperature, and deliberate studies of the thermal annealing on BP-based electronic devices are required. Here, the effect of post-fabrication vacuum annealing on the performance of BP field-effect transistor (FET) was investigated.

Original languageEnglish
Title of host publication2018 76th Device Research Conference, DRC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781538630280
Publication statusPublished - 2018 Aug 20
Event76th Device Research Conference, DRC 2018 - Santa Barbara, United States
Duration: 2018 Jun 242018 Jun 27


Other76th Device Research Conference, DRC 2018
Country/TerritoryUnited States
CitySanta Barbara

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'High performance black phosphorus field-effect transistors with vacuum-annealed low-resistance Ohmic contact'. Together they form a unique fingerprint.

Cite this