TY - JOUR
T1 - Field effect measurements on charge carrier mobilities in various polymer-fullerene blend compositions
AU - von Hauff, E
AU - Parisi, J.
AU - Dyakonov, Vladimir
PY - 2006/7/26
Y1 - 2006/7/26
N2 - In this study we investigated materials typically used in polymer photovoltaics. Field effect measurements were performed in order to determine the hole mobilities in the conjugated polymer poly(3-hexylthiophene) (P3HT) and the electron mobilities in the methanofullerene[6,6]-phenyl C61-butyric acid methyl ester (PCBM), and, particularly, in the polymer-fullerene composite blends. Regarding the pure films, electron mobilities in PCBM were found to be in the 10− 2 cm2/Vs range, and hole mobilities in P3HT were found to be in the 10− 3 cm2/Vs range. In the PCBM:P3HT blends, it was found that varying the PCBM content in PCBM:P3HT blends led to a steep increase in electron mobility with increasing PCBM content, while the hole mobility was found to slightly decrease with the increasing PCBM concentration. In 2:1 PCBM:P3HT tempered blends, the charge carrier mobilities were found to be roughly balanced, at 10− 3 cm2/Vs. For improved electron transport in the blends, tempering was found to be crucial.
AB - In this study we investigated materials typically used in polymer photovoltaics. Field effect measurements were performed in order to determine the hole mobilities in the conjugated polymer poly(3-hexylthiophene) (P3HT) and the electron mobilities in the methanofullerene[6,6]-phenyl C61-butyric acid methyl ester (PCBM), and, particularly, in the polymer-fullerene composite blends. Regarding the pure films, electron mobilities in PCBM were found to be in the 10− 2 cm2/Vs range, and hole mobilities in P3HT were found to be in the 10− 3 cm2/Vs range. In the PCBM:P3HT blends, it was found that varying the PCBM content in PCBM:P3HT blends led to a steep increase in electron mobility with increasing PCBM content, while the hole mobility was found to slightly decrease with the increasing PCBM concentration. In 2:1 PCBM:P3HT tempered blends, the charge carrier mobilities were found to be roughly balanced, at 10− 3 cm2/Vs. For improved electron transport in the blends, tempering was found to be crucial.
KW - polymer solar cells
KW - OFETs
KW - charge carrier mobility
U2 - 10.1016/j.tsf.2005.12.025
DO - 10.1016/j.tsf.2005.12.025
M3 - Article
SN - 0040-6090
VL - 511-512
SP - 506
EP - 511
JO - Thin Solid Films
JF - Thin Solid Films
ER -
