Commission of Experts of the German Government on Science and Innovation

Steering Committee on Environmental Sustainability (CES), Housing and Development Board (HDB)

European Union “Becquerel Prize Committee” for outstanding merits in photovoltaics

Editorial Board member of the journal Transactions on Electron Devices, Institute of Electrical and Electronics Engineers (IEEE), USA

Editorial Board member of the journal Progress in Photovoltaics, Wiley, UK

Editorial Board member of the journal Advances in OptoElectronics, Hindawi, Egypt

Editorial Board member of The Open Applied Physics Journal, Bentham

Editorial Board member of the "International Journal of Sustainable Energy Conversion and Storage GREEN", publisher: Walt de Gruyter GmbH & Co. K.G.

Academic Committee of the Asian Photovoltaic Industry Association (APVIA)

Member of the Advisory Board for the Clean Energy Expo Asia 2011, Singapore

Member of the International Solar Energy Society

Member of the Scientific Committee "Energy Forum" 2010, Italy

International Conference on Materials for Advanced Technologies 2011, Symposium O

Organising Committee of the PV Asia Pacific Conference 2011

Member of Editorial Advisory Board of the journal Architectural Science Review, Sydney, Australia

Member of IEA-SHC Task 41, Solar Energy and Architecture

Member of IEA-SHC Task 40 / Annex 52: Net Zero Energy Buildings

Member of APEC-ESCI-SB Task 4: Low Energy Windows Demonstration

Member of the "Renewable Energy Task Force" of the Singapore Green Building Council, Singapore