Polypyrrole back-contact to CdS/CdTe solar cellBereznev, Sergei; Jarkov, Aleksandr; Kois, Julia; Volobujeva, Olga; Mellikov, Enn; Öpik, Andres11th International Symposium on Functional π-electron systems (Fπ-11) : June 2-7, 2013, Arcachon, France : book of abstracts2013 / p. 164