title: Naphthodithiophene-2,1,3-benzothiadiazole copolymers for bulk heterojunction solar cells.
abstract: Two newly synthesized naphthodithiophene-based copolymers, PNB, exhibit a low optical bandgap of ∼1.64 eV with which the solar cells fabricated from the blend of PNB and PC(71)BM afforded a power conversion efficiency of 5.3% with external quantum efficiency over 60% in a broad spectral range.
authors.affiliation: Institute of Molecular Functional Materials and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
authors.forename: Bao
authors.initials: B
authors.lastname: Wang
authors.forename: Sai-Wing
authors.initials: SW
authors.lastname: Tsang
authors.forename: Weifeng
authors.initials: W
authors.lastname: Zhang
authors.forename: Ye
authors.initials: Y
authors.lastname: Tao
authors.forename: Man Shing
authors.initials: MS
authors.lastname: Wong