1. Laboratory
for Thin Films and Photovoltaics, Empa—Swiss Federal Laboratories for Materials Science and Technology, Ueberlandstrasse 129, 8600 Duebendorf, Switzerland
2. Laboratory
for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1015-Lausanne, Switzerland
3. Center
of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah 22254, Saudi Arabia