Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

Strathprints

Temperature-dependent hysteresis of the emission spectrum of Eu-implanted, Mg-doped HVPE GaN

O'Donnell, K. P. and Martin, R. W. and Edwards, P. R. and Lorenz, K. and Alves, E. and Bockowski, M. (2013) Temperature-dependent hysteresis of the emission spectrum of Eu-implanted, Mg-doped HVPE GaN. In: The Physics of Semiconductors. AIP Conference Proceedings. ISBN 9780735411944

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

A red emission site (hereafter, Eu0), with its main 5D0 to 7F2 peak at 619 nm, is observed by photoluminescence (PL) spectroscopy of Eu-implanted, Mg-doped GaN, in samples annealed at high temperature and pressure (up to 1400 °C, 1 GPa) in order to remove lattice damage. The PL spectrum is strongly temperature-hysteretic between room temperature and ∼20 K: below 30 K, photochromic switching occurs between Eu0 and the usually dominant Eu1 center; upon warming the sample, the Eu0 signal does not recover until the temperature reaches ∼150 K. Photobleaching of Eu1 takes place at low temperatures after cooling, while photo-enhancement of Eu0 takes place at high temperatures after re-warming. These observations suggest a microscopic model of charge-driven defect interconversion in p-type GaN:Eu, Mg.

Item type: Book Section
ID code: 46604
Keywords: temperature dependent hysteresis, emission spectrum, eu-implanted, mg-doped, hvpe gan, Physics, Physics and Astronomy(all)
Subjects: Science > Physics
Department: Faculty of Science > Physics
Technology and Innovation Centre > Bionanotechnology
Technology and Innovation Centre > Photonics
Depositing user: Pure Administrator
Date deposited: 28 Jan 2014 11:54
Last modified: 30 Jan 2019 10:23
URI: https://strathprints.strath.ac.uk/id/eprint/46604
Export data:
CORE (COnnecting REpositories)