G. Brammertz

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The removal of secondary phases from the surface of the kesterite crystals is one of the major challenges to improve the performances of Cu2ZnSn(S,Se)4 (CZTSSe) thin film solar cells. In this contribution, the KCN/KOH chemical etching approach, originally developed for the removal of CuxSe phases in Cu(In,Ga)(S,Se)2 thin films, is applied to CZTSe absorbers(More)
High Quality Ge Virtual Substrates on Si Wafers with Standard STI Patterning R. Loo,* G. Wang,** L. Souriau,** J. C. Lin, S. Takeuchi,* G. Brammertz,* and M. Caymax* IMEC, 3001 Leuven, Belgium Department of Metallurgy and Materials, Department of Physics and Astronomy, and Department of Nuclear and Radiation Physics, Katholieke Universiteit Leuven, 3001(More)
Fullerene-based molecules are the archetypical electron-accepting materials for organic photovoltaic devices. A detailed knowledge of the degradation mechanisms that occur in C60 layers will aid in the development of more stable organic solar cells. Here, the impact of storage in air on the optical and electrical properties of C60 is studied in thin films(More)
We report on the fabrication of MOS capacitors on 200 mm virtual GaAs substrates using a Si CMOS processing environment. The fabricated capacitors were comparable to those processed on bulk GaAs material. Topside contact was made to the GaAs using a novel CMOS compatible self-aligned NiGe contact scheme resulting in a measured contact resistance of 0.26(More)
A. G. Kozorezov,1 R. A. Hijmering,2 G. Brammertz,2 J. K. Wigmore,1 A. Peacock,2 D. Martin,2 P. Verhoeve,2 A. A. Golubov,3 and H. Rogalla3 1Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom 2Science Payloads and Advanced Concepts Office, SCI-A, ESTEC, European Space Agency, Noordwijk, The Netherlands 3Department of Applied(More)
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