Chemistry Institute, Federal University of Bahia, Ondina Campus, Salvador 40.170-115, Bahia, Brazil Energy and Environment Center, Federal University of Bahia, Ondina Campus, Salvador 40.170-115, ...
Applied Physics and Semiconductor Spectroscopy, Brandenburg University of Technology Cottbus–Senftenberg, Konrad-Zuse-Strasse 1, D-03046 Cottbus, Germany ...