1. Department of Advanced Materials Chemistry
and WCU Center for Next Generation Photovoltaic Systems, Korea University, Jochiwon-eup, Sejong-si, 339-700 Republic of Korea
2. Pople Computational
Chemistry Laboratory, Departamento de Quı́mica, Universidade Federal de Sergipe, 49.100-000 — São
Cristóvão, SE Brazil
3. Institut des Sciences et Ingénierie
Chimiques, École Polytechnique Fédérale de Lausanne, BCH 1402, CH-1015 Lausanne, Switzerland