Efficient polymer solar cells based on a low bandgap semi-crystalline DPP polymer-PCBM blends.
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.
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, 01003, USA.
Feng
F
Liu
Yu
Y
Gu
Cheng
C
Wang
Wei
W
Zhao
Dian
D
Chen
Alejandro L
AL
Briseno
Thomas P
TP
Russell
D003460:Crystallization; D037741:Fullerenes / Q000737:chemistry*; D016566:Organoselenium Compounds / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D053838:Scattering, Small Angle; D012993:Solar Energy; D013876:Thiophenes / Q000737:chemistry; D014961:X-Ray Diffraction
D037741:Fullerenes; D016566:Organoselenium Compounds; D011108:Polymers; D013876:Thiophenes; C526212:poly(3-hexyl)selenophene