Dual-mode operation of 2D material-base hot electron transistors.

Abstract:

:Vertical hot electron transistors incorporating atomically-thin 2D materials, such as graphene or MoS2, in the base region have been proposed and demonstrated in the development of electronic and optoelectronic applications. To the best of our knowledge, all previous 2D material-base hot electron transistors only considered applying a positive collector-base potential (VCB > 0) as is necessary for the typical unipolar hot-electron transistor behavior. Here we demonstrate a novel functionality, specifically a dual-mode operation, in our 2D material-base hot electron transistors (e.g. with either graphene or MoS2 in the base region) with the application of a negative collector-base potential (VCB < 0). That is, our 2D material-base hot electron transistors can operate in either a hot-electron or a reverse-current dominating mode depending upon the particular polarity of VCB. Furthermore, these devices operate at room temperature and their current gains can be dynamically tuned by varying VCB. We anticipate our multi-functional dual-mode transistors will pave the way towards the realization of novel flexible 2D material-based high-density and low-energy hot-carrier electronic applications.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Lan YW,Torres CM Jr,Zhu X,Qasem H,Adleman JR,Lerner MB,Tsai SH,Shi Y,Li LJ,Yeh WK,Wang KL

doi

10.1038/srep32503

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

32503

issn

2045-2322

pii

srep32503

journal_volume

6

pub_type

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