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Efficient Polymer Solar Cells Based on a Low Bandgap Semi‐crystalline DPP Polymer‐PCBM Blends
Author(s) -
Liu Feng,
Gu Yu,
Wang Cheng,
Zhao Wei,
Chen Dian,
Briseno Alejandro L.,
Russell Thomas P.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201200902
Subject(s) - materials science , polymer , morphology (biology) , characterization (materials science) , band gap , nanotechnology , solar cell , chemical engineering , polymer science , optoelectronics , composite material , genetics , engineering , biology
Solar cell performance and morphology characterization of a diketopyrrolopyrrole‐based low bandgap polymer is reported. The polymer adopts an H‐type aggregation and solvent mixture processing gives a better morphology. The morphology evolution is characterized by combined GIXD and GISAXS experiments and a four step morphology development mechanism is proposed.