Experimental and Theoretical Investigations of Different Diketopyrrolopyrrole-Based Polymers.

ABSTRACT: Diketopyrrolopyrrole (DPP)-based polymers are often considered as the most promising donor moiety in traditional bulk heterojunction solar cell devices. In this paper, we report the synthesis, characterization of various DPP-based copolymers with different molecular weights, and polydispersity where other aromatic repeating units (phenyl or thiophene based) are connected by alternate double bonds or triple bonds. Some of the copolymers were used for device fabrication and the crucial parameters such as fill factor (FF) and open circuit voltage (V _oc) were calculated. The density functional theory was used to optimize the geometries and deduce highest occupied molecular orbital-lowest unoccupied molecular orbital gaps of all the polymers and theoretically predict their opt

SUBMITTER: Murugan P 

PROVIDER: S-EPMC6645348 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature