Do the Defects Make it Work. Defect Engineering in pi- Conjugated Polymer Films and Their Solar Cells (Presentation)

摘要

The summaries of this report are: (1) charged defects produce 10(sup 15)-10(sup 17) cm(sup -3) free carriers; (2) treatment with nucleophiles decreases p(sub f) and (sigma) while treatment with electrophiles does not change p(sub f) but increases (sigma); (3) both treatments increase (mu)(sub p), L(sub ex) and stability against photo-degradation; (4) charged defects can improve OPV by increasing conductivity and creating interfacial electric fields but they hurt (mu)(sub p), L(sub ex) and chemical stability; and (5) a better way--synthesize materials without covalent defects and dope with purposely added, bound dopants.