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

Gregg, B. A. ; Reese, M. O. ; Kopidakis, N.

Technical Information Center Oak Ridge Tennessee

关键词: Solar cells;    Polymers;    Electric fields;    Stability;    Defects;   

RP-ID  :  DE2008939538

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 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.