NDLI: Irradiation effects on AlGaN HFET devices and GaN layers

Content Provider	Springer Nature Link
Author	Gnanapragasam, Sonia Richter, Eberhard Brunner, Frank Denker, Andrea Lossy, Richard Mai, Michael Lenk, Friedrich Opitz Coutureau, Jörg Pensl, Gerhard Schmidt, Jens Zeimer, Ute Wang, Liun Krishnan, Baskar Weyers, Markus Würfl, Jaochim Tränkle, Günther
Copyright Year	2008
Abstract	AlGaN/GaN heterostructure field effect transistors (HFETs) were irradiated with protons as well as carbon, oxygen, iron and krypton ions of high (68 and 120 MeV) and low (2 MeV) energy with fluences in the range from 1 × 10$^{7}$ to 1 × 10$^{13 }$cm$^{−2}$. High energy irradiation with protons, carbon and oxygen produced no degradation in devices while krypton irradiation at the fluence of 1 × 10$^{10}$ cm$^{−2}$ resulted in a small reduction of 2% in the transconductance. Similarly, for GaN samples irradiated with protons, carbon and oxygen at high energy no changes were seen by XRD, PL and Hall effect, while changes in lattice constant and a reduction in PL intensity were observed after irradiation with high energy krypton. Low energy irradiation with carbon and oxygen at a fluence of 5 × 10$^{10}$ cm$^{−2}$ results in small change in the device performance while remarkable changes in device characteristics are seen at a fluence of 1 × 10$^{12}$ cm$^{−2}$ for carbon, oxygen, iron and krypton irradiation. Similarly changes are also observed by XRD, PL and Hall effect for the thick GaN layer irradiated at the fluence of 1 × 10$^{12}$ cm$^{−2}$. The device results and GaN layer properties are strongly correlated.
Starting Page	64
Ending Page	67
Page Count	4
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	19
Issue Number	1
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2008-02-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation of Materials Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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