1. Division of Material Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden
2. Dr. M.A Kazi Institute of Chemistry University of Sindh Jamshoro, 76080 Sindh, Pakistan
3. Istituto per la Microelettronica ed i Microsistemi, Consiglio Nazionale delle Ricerche (IMM-CNR), Sede di Bologna, 40129 Bologna, Italy
4. Istituto di Chimica della Materia Condensata e Tecnologie per l’Energia, Consiglio Nazionale delle Ricerche (ICMATE-CNR) and Dipartimento di Scienze Chimiche, Università di Padova, 35131 Padova, Italy
5. Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174 Norrköping, Sweden
6. Department of Physics, Chemistry and Biology, Linkoping University, 58183 Linköping, Sweden
7. Department of Molecular Sciences and Nanosystems, Ca’ Foscari University Venice, Via Torino 155, 30170 Mestre, Venice, Italy