ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Carrier-transport studies of III-nitride/Si3N4/Si isotype heterojunctions

Kumar, Mahesh and Roul, Basanta and Bhat, Thirumaleshwara N and Rajpalke, Mohana K and Kalghatgi, AT and Krupanidhi, SB (2012) Carrier-transport studies of III-nitride/Si3N4/Si isotype heterojunctions. In: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 209 (5). pp. 994-997.

[img] PDF
PHY_ STA_ SOL_ A-APP_ AND_ MAT_ SCI_ 209_5_994-997_ 2012.pdf - Published Version
Restricted to Registered users only

Download (406Kb) | Request a copy
Official URL: http://dx.doi.org/10.1002/pssa.201127721

Abstract

GaN/Si3N4/n-Si and InN/Si3N4/n-Si heterojunctions (HJs) were fabricated using plasma-assisted molecular beam epitaxy for a comparison study. Single-crystalline wurtzite structures of GaN and InN epilayers were confirmed by high-resolution X-ray diffraction and thickness of ultrathin Si3N4 layer was measured by transmission electron microscopy. n-GaN/Si3N4/n-Si HJs show diode-like rectifying current-voltage (I-V) characteristic, while n-InN/Si3N4/n-Si HJs show symmetric nonlinear I-V behavior. The I-V characteristics of both HJs were discussed in terms of the band diagram of HJs and the carrier transport mechanism. The activation energies of carrier conduction were estimated to be similar to 29 meV for GaN/Si3N4/Si and similar to 95 meV for InN/Si3N4/Si HJs. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Item Type: Journal Article
Keywords: heterojunctions; MBE; silicon nitrides; transport properties
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 16 Jul 2012 10:03
Last Modified: 16 Jul 2012 10:03
URI: http://eprints.iisc.ernet.in/id/eprint/44597

Actions (login required)

View Item View Item