Space-charge limited transport in large-area monolayer hexagonal boron nitride

Nano Letters
Farzaneh MahvashMohamed Siaj

Abstract

Hexagonal boron nitride (hBN) is a wide-gap material that has attracted significant attention as an ideal dielectric substrate for 2D crystal heterostructures. We report here the first observation of in-plane charge transport in large-area monolayer hBN, grown by chemical vapor deposition. The quadratic scaling of current with voltage at high bias corresponds to a space-charge limited conduction mechanism, with a room-temperature mobility reaching up to 0.01 cm(2)/(V s) at electric fields up to 100 kV/cm in the absence of dielectric breakdown. The observation of in-plane charge transport highlights the semiconducting nature of monolayer hBN, and identifies hBN as a wide-gap 2D crystal capable of supporting charge transport at high field. Future exploration of charge transport in hBN is motivated by the fundamental study of UV optoelectronics and the massive Dirac fermion spectrum of hBN.

References

Mar 15, 1995·Physical Review. B, Condensed Matter·X BlaseM L Cohen
Aug 10, 2006·Nano Letters·R ArenalA Loiseau
Mar 24, 2007·Chemical Reviews·Veaceslav CoropceanuJean-Luc Brédas
Aug 18, 1995·Science·N G ChopraA Zettl
Sep 4, 2008·Physical Review Letters·G GiovannettiP J Kelly
Mar 2, 2011·Small·Roman V GorbachevPeter Blake
May 18, 2011·Nano Letters·Alexander S MayorovA K Geim
Mar 3, 2012·Nano Letters·Liam BritnellKostya S Novoselov
Oct 5, 2013·Nature Communications·Zheng LiuPulickel M Ajayan

❮ Previous
Next ❯

Citations

Jul 1, 2016·ACS Applied Materials & Interfaces·Hyunjin JiSeong Chu Lim
Feb 14, 2017·Scientific Reports·F MahvashM Siaj
Jan 10, 2020·Nature·Chee-Tat TohBarbaros Özyilmaz
Jun 10, 2021·Advanced Science·Fuad Indra Alzakia, Swee Ching Tan
Mar 25, 2019·ACS Applied Materials & Interfaces·Yuan XieJing Liu
Apr 28, 2018·ACS Applied Materials & Interfaces·Dong Yeong KimJong Kyu Kim

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.