TY - GEN
T1 - Self-organization of polymer chains in efficient polymer solar cells
AU - Yao, Yan
AU - Li, Gang
AU - Yang, Hoichang
AU - Yang, Yang
PY - 2008/4/6
Y1 - 2008/4/6
N2 - Polymer based solar cells have tremendous application in harnessing solar energy in a cost-effective way. Here we studied the polymer chains self-organization effect in regioregular poly(3-hexylthiophene) (RR-P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) solar cells in an evolutional way, with the difference being spin-coating time ts (20 to 80 sec) which controls solvent annealing time (ta) by the solvent residue. Ultraviolet-visible (UV-vis) absorption spectroscopy, scanning atomic force microscopy (AFM),transmission electron microscopy (TEM), and grazing-incidence X-ray diffraction (GIXD) were conducted on these blend films and linked to the device performance. We found the trade-off between a) efficient charge separation and b) absorption plus charge transport for maximizing the efficiency of polymer solar cells, the benefits of the latter clearly dominate in the P3HT:PCBM system.
AB - Polymer based solar cells have tremendous application in harnessing solar energy in a cost-effective way. Here we studied the polymer chains self-organization effect in regioregular poly(3-hexylthiophene) (RR-P3HT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) solar cells in an evolutional way, with the difference being spin-coating time ts (20 to 80 sec) which controls solvent annealing time (ta) by the solvent residue. Ultraviolet-visible (UV-vis) absorption spectroscopy, scanning atomic force microscopy (AFM),transmission electron microscopy (TEM), and grazing-incidence X-ray diffraction (GIXD) were conducted on these blend films and linked to the device performance. We found the trade-off between a) efficient charge separation and b) absorption plus charge transport for maximizing the efficiency of polymer solar cells, the benefits of the latter clearly dominate in the P3HT:PCBM system.
UR - http://www.scopus.com/inward/record.url?scp=77955597727&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:77955597727
SN - 9780841269859
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 235th National Meeting, Abstracts of Scientific Papers
T2 - 235th National Meeting of the American Chemical Society, ACS 2008
Y2 - 6 April 2008 through 10 April 2008
ER -