Hexagonal boron nitride for deep UV photonics

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Hexagonal boron nitride (h-BN) possesses extraordinary physical properties including wide bandgap (Eg ∼ 6.5 eV), high temperature stability and corrosion resistance, and large optical absorption and emission, and thermal neutron capture cross section. In addition, h-BN is a material with a very low dielectric constant, but having a very high dielectric strength. Due to its similar lattice constant with graphene, h-BN is an ideal template and dielectric separation layer in graphene devices. Furthermore, having a hexagonal layered-structure, h-BN represents an ideal platform for probing fundamental 2D properties in semiconductors. In comparison to AlN, p-type h-BN appears to be easier to obtain [1-3]. Currently, the most outstanding issue for achieving high performance deep UV emitters based on III-nitrides is the low p-type conductivity of Al-rich AlGaN. This issue is caused by the large acceptor activation energies (EA) in Al-rich AlxGa1-xN (as large as 500 meV in AlN) [3-6]. The attainment of p-type h-BN could potentially overcome the intrinsic problem of low p-type conductivity in Al-rich AlGaN for deep UV photonic devices. Wafer-scale h-BN epilayers (up to 2-inch in diameter) have been successfully synthesized by MOCVD [1-3, 7-9].

Original languageEnglish
Title of host publication2015 IEEE Summer Topicals Meeting Series, SUM 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages133-134
Number of pages2
ISBN (Electronic)9781479974689
DOIs
StatePublished - Sep 9 2015
EventIEEE Summer Topicals Meeting Series, SUM 2015 - Nassau, Bahamas
Duration: Jul 13 2015Jul 15 2015

Publication series

Name2015 IEEE Summer Topicals Meeting Series, SUM 2015

Conference

ConferenceIEEE Summer Topicals Meeting Series, SUM 2015
CountryBahamas
CityNassau
Period07/13/1507/15/15

Fingerprint Dive into the research topics of 'Hexagonal boron nitride for deep UV photonics'. Together they form a unique fingerprint.

Cite this