Projects per year
Personal profile
Personal Statement
I am a postdoctoral researcher in the Semiconductor Spectroscopy & Devices Group in the Department of Physics.
I gained my PhD from the University of Strathclyde in 2013. My PhD research was focused on the luminescence study of III-nitride semiconductor nanostructures and LEDs. I also have a Diplom (equivalent to a Master of Science) from the Technical University of Munich.
My current research focuses on the optical characterisation of III-nitride semiconductors, which are the building block for white LEDs replacing the currently used, highly inefficient light sources.
Research Interests
My research interests are focussed on the optical spectroscopy and electron microscopy of semiconductors, especially the III-nitride material system. This quaternary system consists of GaN, InN and GaN and its various alloys.
This material system has a wide range of applications, such as solid-state lighting, optoelectronic devices (light-emitting diodes and laser diodes), high-power and high-frequency electronics, water purification, solar cells or communication.
My main research focus lies on the investigation of nanostructures, such as nanorods, of these materials using high resolution cathodoluminescence (CL) hyperspectral imaging. I am also interested in combining the CL imaging technique with electron channelling contrast imaging, an electron diffraction method in the scanning electron microscope, to correlate the structural properties of dislocations with their optical properties. Furthermore, I am collaborating with colleagues from the Department of Pure and Applied Chemistry to develop a novel organic colour converter for a hybrid organic/inorganic white LED using GaN-based nanostructures.
Characterisation techniques include CL hyperspectral imaging, photoluminescence, electroluminescence, X-ray microanalysis and electron bean-induced current.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
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IAA Proof of concept for measurement of semiconductor devices
Martin, R. (Principal Investigator) & Bruckbauer, J. (Research Co-investigator)
1/06/24 → 31/03/26
Project: Research
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MeGaLED: Metrology of GaN pseudosubstrates for next generation LEDs
Bruckbauer, J. (CoPI) & Martin, R. (CoPI)
1/04/23 → 31/03/24
Project: Internally funded project
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Strain-induced modifications of thin film silicon membranes by physical bending
Margariti, E., Bruckbauer, J., Winkelmann, A., Guilhabert, B., Gunasekar, N.-K., Trager-Cowan, C., Martin, R. & Strain, M., 17 May 2025, In: Materials. 18, 10, 15 p., 2335.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Strain and luminescence properties of hexagonal hillocks in N-polar GaN
Bruckbauer, J., Cios, G., Sarua, A., Feng, P., Wang, T., Hourahine, B., Winkelmann, A., Trager-Cowan, C. & Martin, R., 7 Apr 2025, In: Journal of Applied Physics. 137, 13, 135705.Research output: Contribution to journal › Article › peer-review
Open AccessFile
Datasets
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Electroluminescence hyperspectral images of light-emitting diodes
Edwards, P. (Creator), Bruckbauer, J. (Creator), Cameron, D. (Creator) & Martin, R. (Creator), University of Strathclyde, 4 Sept 2023
DOI: 10.15129/1d98de3e-6e96-418e-a782-4bfe464dd748
Dataset
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Data for: "A systematic comparison of polar and semipolar Si-doped AlGaN alloys with high AlN content"
Spasevski, L. (Creator), Martin, R. (Creator), Bruckbauer, J. (Creator) & Edwards, P. (Creator), University of Strathclyde, 15 Oct 2020
DOI: 10.15129/d7c54205-9bca-4785-9b3e-1e6a2b182771
Dataset
Prizes
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Best poster award for the Faculty of Science at the Strathclyde Research Day 2011
Bruckbauer, J. (Recipient), 7 Jun 2011
Prize: Prize (including medals and awards)
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Fred Stern Memorial Prize 2014
Bruckbauer, J. (Recipient), 26 Jun 2014
Prize: Prize (including medals and awards)
Activities
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RMS EBSD meeting 2025: The application of EBSD to nominally single crystal semiconductors
Bruckbauer, J. (Invited speaker)
1 Jan 2025Activity: Talk or Presentation › Invited talk
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Plenary talk: XVIIIth International Conference on Electron Microscopy, Zakopane, Poland, June 2024. Pushing the Limits of Diffraction Imaging in the Scanning Electron microscope for the Structural Characterisation of Semiconductor thin Films and Microstructures
Trager-Cowan, C. (Invited speaker), Bruckbauer, J. (Contributor), Hiller, K. (Contributor), Hourahine, B. (Contributor), McDermott, R. (Contributor), Waters, D. (Contributor), Alasmari, A. M. A. (Contributor), Gunasekar, N. (Contributor), Cios, G. (Contributor) & Winkelmann, A. (Contributor)
10 Jun 2024Activity: Talk or Presentation › Invited talk