Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Fabrication and spectroscopy of GaN microcavities made by epitaxial lift-off

Xiong, C. and Rizzi, F. and Bejtka, K. and Edwards, P. R. and Gu, E. and Dawson, M. D. and Martin, R. W. and Watson, I. M. (2010) Fabrication and spectroscopy of GaN microcavities made by epitaxial lift-off. Superlattices and Microstructures, 47 (1). pp. 129-133.

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

Abstract

A novel epitaxial lift-off process for III-nitrides, involving selective removal of a sacrificial (Al, In)N layer in a hot nitric acid etchant, is reported. This was applied to the fabrication of 1−λ GaN planar microcavities bounded by two dielectric DBRs, starting from epitaxial GaN-(Al, In)N-GaN trilayers grown on free-standing GaN or high-quality GaN template material. An optically smooth surface was retained on the GaN surface exposed to the nitric acid etch, with root mean square roughness values as low as 2 nm over 8 μm×8 μm areas. Photoluminescence and reflectivity spectra were recorded from completed microcavities, and the latter showed clear dips in the region of 3.5 eV.