TY - JOUR
T1 - Co-solvent effects on the microstructure-related photovoltaic properties of organic solar cells
AU - Wu, Fu Chiao
AU - You, Teng Liang
AU - Li, Yi Hao
AU - Cheng, Horng Long
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The current study aims to discover the key factors affecting the photovoltaic performance of poly (3-hexylthiophene) (P3HT):[6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells. A low-boiling-point (BP) solvent (chloroform, CF) was mixed with a high-BP solvent (1,2,4-trichlorobenzene, TCB) to dissolve the P3HT:PCBM blends. Moreover, the volume fraction of CF in the CF:TCB co-solvents was varied to fabricate blending films with different microstructures. The results indicate that the disordered P3HT chains enhanced the absorbance and improved the p-n interface of the blending films, thus enhancing the output current, voltage, and hence, the power conversion efficiency of the solar cells despite the formation of small crystalline P3HT domains that limit charge transport.
AB - The current study aims to discover the key factors affecting the photovoltaic performance of poly (3-hexylthiophene) (P3HT):[6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells. A low-boiling-point (BP) solvent (chloroform, CF) was mixed with a high-BP solvent (1,2,4-trichlorobenzene, TCB) to dissolve the P3HT:PCBM blends. Moreover, the volume fraction of CF in the CF:TCB co-solvents was varied to fabricate blending films with different microstructures. The results indicate that the disordered P3HT chains enhanced the absorbance and improved the p-n interface of the blending films, thus enhancing the output current, voltage, and hence, the power conversion efficiency of the solar cells despite the formation of small crystalline P3HT domains that limit charge transport.
UR - http://www.scopus.com/inward/record.url?scp=84897142537&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897142537&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2012.07.011
DO - 10.1016/j.egypro.2012.07.011
M3 - Conference article
AN - SCOPUS:84897142537
VL - 25
SP - 76
EP - 81
JO - Energy Procedia
JF - Energy Procedia
SN - 1876-6102
T2 - PV Asia Pacific Conference, PVAP 2011
Y2 - 2 November 2011 through 4 November 2011
ER -