Wide bandgap semiconductors

Green laser

We are strengthening our role in the development of solid-state quantum systems, such as optical active spin quantum bits, quantum memories and registers.

These are basic elements required for various applications in quantum technologies, e.g. long-distance quantum communications, quantum sensing and quantum computing. Our expertise extends from materials science, which includes design and growth of quantum-grade materials (SiC, III-nitrides and other semiconductors) and structures for nanophotonic and other quantum devices, to characterization, control and manipulation of optical spin qubits.

We also develop MOCVD of group III nitrides, particularly ultra-wide bandgap AlN, and resolve doping issues. We further develop group III nitrides at the 2D limit by leading predictive theoretical modeling and MOCVD approaches and explore new material performance for electronics at nanoscale.

Publications

2024

Satoru Yoshioka, Kazuhiro Yasuda, Ching-Lien Hsiao, Chih-Wei Hsu, Weine Olovsson, Jens Birch, Carl Hemmingsson, Galia Pozina (2024) Local Structure of Zn Dopant in ß-Phase Ga2O3 The Journal of Physical Chemistry C (Article in journal) Continue to DOI
Hui Zeng, Weimin Wang, Ivan Gueorguiev Ivanov, Vanya Darakchieva, Jianwu Sun (2024) Determination of the conduction and valence band offsets at the Co<sub>3</sub>O<sub>4</sub>/3C-SiC p-n heterojunction Applied Physics Letters, Vol. 125, Article 162102 (Article in journal) Continue to DOI
Oscar Bulancea Lindvall, Joel Davidsson, Ivan Gueorguiev Ivanov, Adam Gali, Viktor Ivády, Rickard Armiento, Igor Abrikosov (2024) Temperature dependence of the AB lines and optical properties of the carbon-antisite-vacancy pair in 4⁢��−Si⁢C Physical Review Applied, Vol. 22, Article 034056 (Article in journal) Continue to DOI
Alyssa Mock, Steffen Richter, Alexis Papamichail, Vallery Stanishev, Misagh Ghezellou, Jawad Ul-Hassan, Andreas Popp, Saud Bin Anooz, Daniela Gogova-Petrova, Praneeth Ranga, Sriram Krishnamoorthy, Rafal Korlacki, Mathias Schubert, Vanya Darakchieva (2024) Effective uniaxial dielectric function tensor and optical phonons in (¯2⁢01)-oriented ��-Ga2⁢O3 films with equally distributed sixfold-rotation domains Physical Review Applied, Vol. 22, Article 044003 (Article in journal) Continue to DOI
Oscar Bulancea-Lindvall, Joel Davidsson, Ivan G. Ivanov, Adam Gali, Viktor Ivády, Rickard Armiento, Igor A. Abrikosov (2024) Temperature dependence of the AB lines and optical properties of the carbon--antisite-vacancy pair in 4H-SiC Physical Review Applied, Vol. 22, Article 034056 (Article in journal) Continue to DOI
Erik Hesselmeier, Pierre Kuna, Wolfgang Knolle, Florian Kaiser, Son Tien Nguyen, Misagh Ghezellou, Jawad Ul-Hassan, Vadim Vorobyov, Jorg Wrachtrup (2024) High-Fidelity Optical Readout of a Nuclear-Spin Qubit in Silicon Carbide Physical Review Letters, Vol. 132, Article 180804 (Article in journal) Continue to DOI
Yuanju Qu, Valdas Jokubavicius, Duc Quang Hoang, Xianjie Liu, Mats Fahlman, Ivan Gueorguiev Ivanov, Rositsa Yakimova, Jianwu W. Sun (2024) Aging Ni(OH)2 on 3C-SiC Photoanodes to Achieve a High Photovoltage of 1.1 V and Enhanced Stability for Solar Water Splitting in Strongly Alkaline Solutions ACS Applied Materials and Interfaces, Vol. 16, p. 50926-50936 (Article in journal) Continue to DOI
Sachin Sharma, Laurent Souqui, Justinas Palisaitis, Duc Quang Hoang, Ivan Gueorguiev Ivanov, Per O A Persson, Hans Högberg, Henrik Pedersen (2024) On the origin of epitaxial rhombohedral-B4C growth by CVD on 4H-SiC Dalton Transactions, Vol. 53, p. 10730-10736 (Article in journal) Continue to DOI
Jonathan Koerber, Jonah Heiler, Philipp Fuchs, Philipp Flad, Erik Hesselmeier, Pierre Kuna, Jawad Ul-Hassan, Wolfgang Knolle, Christoph Becher, Florian Kaiser, Joerg Wrachtrup (2024) Fluorescence Enhancement of Single V2 Centers in a 4H-SiC Cavity Antenna Nano Letters, Vol. 24, p. 9289-9295 (Article in journal) Continue to DOI
Di Liu, Florian Kaiser, Vladislav Bushmakin, Erik Hesselmeier, Timo Steidl, Takeshi Ohshima, Son Tien Nguyen, Jawad Ul-Hassan, Oney O. Soykal, Jorg Wrachtrup (2024) The silicon vacancy centers in SiC: determination of intrinsic spin dynamics for integrated quantum photonics NPJ QUANTUM INFORMATION, Vol. 10, Article 72 (Article in journal) Continue to DOI

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