TY - GEN
T1 - Microstructural modification of polycarbazole-based polymeric solar cells by thermal annealing
AU - Wu, Fu Chiao
AU - Wu, Tsai Bau
AU - Cheng, Horng Long
AU - Chou, Wei Yang
AU - Tang, Fu Ching
PY - 2014
Y1 - 2014
N2 - Blended thin films were thermal-annealed at various temperatures (T A) to serve as active layers in polymeric solar cells. The films were composed of poly[N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′, 7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl-C71-butyric acid methyl ester and their microstructural features were examined through joint spectroscopy and microscopy. After they were thermal-annealed at a TA below but close to the glass transition temperature of PCDTBT, their various properties improved, including absorbance, molecular ordering, coherence length of PCDTBT, homogeneity of PCDTBT chain conformations, and two-phase pathways. Efficient charge transport and suppressed charge recombination occurred in the modified thin films, resulting in an enhancement of the power conversion efficiency of the corresponding devices.
AB - Blended thin films were thermal-annealed at various temperatures (T A) to serve as active layers in polymeric solar cells. The films were composed of poly[N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′, 7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl-C71-butyric acid methyl ester and their microstructural features were examined through joint spectroscopy and microscopy. After they were thermal-annealed at a TA below but close to the glass transition temperature of PCDTBT, their various properties improved, including absorbance, molecular ordering, coherence length of PCDTBT, homogeneity of PCDTBT chain conformations, and two-phase pathways. Efficient charge transport and suppressed charge recombination occurred in the modified thin films, resulting in an enhancement of the power conversion efficiency of the corresponding devices.
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U2 - 10.1109/AM-FPD.2014.6867183
DO - 10.1109/AM-FPD.2014.6867183
M3 - Conference contribution
AN - SCOPUS:84906261045
SN - 9784863483958
T3 - Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials
SP - 249
EP - 252
BT - Proceedings of AM-FPD 2014 - The 21st International Workshop on Active-Matrix Flatpanel Displays and Devices
PB - IEEE Computer Society
T2 - 21st International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2014
Y2 - 2 July 2014 through 4 July 2014
ER -