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Siddik Icli - One of the best experts on this subject based on the ideXlab platform.
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characterization of n n bis 2 1 hydoxy 4 methylpentyl 3 4 9 10 perylene bis dicarboximide sensitized nanocrystalline tio2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, Serdar N Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO2 and inject electrons into TiO2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm2 and open-circuit voltage of around 0.7 V at 80 mW/cm2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO2 cells prepared by using the same Polythiophene derivatives.
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Characterization of N, N′-bis-2-(1-hydoxy-4-methylpentyl)-3, 4, 9, 10-perylene bis (dicarboximide) sensitized nanocrystalline TiO2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, N. Serdar Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO 2 and inject electrons into TiO 2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm 2 and open-circuit voltage of around 0.7 V at 80 mW/cm 2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO 2 cells prepared by using the same Polythiophene derivatives.
Ceylan Zafer - One of the best experts on this subject based on the ideXlab platform.
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characterization of n n bis 2 1 hydoxy 4 methylpentyl 3 4 9 10 perylene bis dicarboximide sensitized nanocrystalline tio2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, Serdar N Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO2 and inject electrons into TiO2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm2 and open-circuit voltage of around 0.7 V at 80 mW/cm2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO2 cells prepared by using the same Polythiophene derivatives.
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Characterization of N, N′-bis-2-(1-hydoxy-4-methylpentyl)-3, 4, 9, 10-perylene bis (dicarboximide) sensitized nanocrystalline TiO2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, N. Serdar Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO 2 and inject electrons into TiO 2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm 2 and open-circuit voltage of around 0.7 V at 80 mW/cm 2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO 2 cells prepared by using the same Polythiophene derivatives.
Canan Karapire - One of the best experts on this subject based on the ideXlab platform.
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characterization of n n bis 2 1 hydoxy 4 methylpentyl 3 4 9 10 perylene bis dicarboximide sensitized nanocrystalline tio2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, Serdar N Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO2 and inject electrons into TiO2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm2 and open-circuit voltage of around 0.7 V at 80 mW/cm2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO2 cells prepared by using the same Polythiophene derivatives.
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Characterization of N, N′-bis-2-(1-hydoxy-4-methylpentyl)-3, 4, 9, 10-perylene bis (dicarboximide) sensitized nanocrystalline TiO2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, N. Serdar Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO 2 and inject electrons into TiO 2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm 2 and open-circuit voltage of around 0.7 V at 80 mW/cm 2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO 2 cells prepared by using the same Polythiophene derivatives.
Frederik C. Krebs - One of the best experts on this subject based on the ideXlab platform.
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an explanation for the high stability of polycarboxythiophenes in photovoltaic devices a solid state nmr dipolar recoupling study
Solar Energy Materials and Solar Cells, 2008Co-Authors: Morten Bjerring, Niels Chr Nielsen, Julie S. Nielsen, Ana Siu, Frederik C. KrebsAbstract:Abstract Continuous operation of a polymer photovoltaic device under accelerated conditions for more than 1 year has been demonstrated (8760 h at 72 °C, 1000 W m−2, AM1.5, under vacuum). Formation of hydrogen-bonded networks is proposed to be responsible for the long lifetime and high stability observed in photovoltaic devices employing Polythiophene substituted with carboxylic-acid moieties under oxygen free conditions. 1H and 13C solid-state NMR, IR, and ESR spectroscopy of unmodified and isotopically labeled Polythiophenes were studied. Distances between the isotopically labeled carboxylic acid carbon atoms were measured by 13C solid-state magic-angle-spinning (MAS) NMR using symmetry-based double-quantum (2Q) dipolar recoupling. This revealed the presence of 13C–13C distances of 3.85 A, which correspond to the C–C distance in hydrogen-bonded carboxylic acid dimers. In spite of the presence of carboxylic groups in the polymer as demonstrated by 13C CP/MAS NMR and IR spectroscopy, the absence of carboxylic protons in solid state 1H NMR spectra indicate that they are mobile. We link the extraordinary stability of this system to the rigid nature, cross-linking through a hydrogen-bonded network and a partially oxidized state.
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An explanation for the high stability of polycarboxythiophenes in photovoltaic devices—A solid-state NMR dipolar recoupling study
Solar Energy Materials and Solar Cells, 2008Co-Authors: Morten Bjerring, Niels Chr Nielsen, Julie S. Nielsen, Ana Siu, Frederik C. KrebsAbstract:Abstract Continuous operation of a polymer photovoltaic device under accelerated conditions for more than 1 year has been demonstrated (8760 h at 72 °C, 1000 W m−2, AM1.5, under vacuum). Formation of hydrogen-bonded networks is proposed to be responsible for the long lifetime and high stability observed in photovoltaic devices employing Polythiophene substituted with carboxylic-acid moieties under oxygen free conditions. 1H and 13C solid-state NMR, IR, and ESR spectroscopy of unmodified and isotopically labeled Polythiophenes were studied. Distances between the isotopically labeled carboxylic acid carbon atoms were measured by 13C solid-state magic-angle-spinning (MAS) NMR using symmetry-based double-quantum (2Q) dipolar recoupling. This revealed the presence of 13C–13C distances of 3.85 A, which correspond to the C–C distance in hydrogen-bonded carboxylic acid dimers. In spite of the presence of carboxylic groups in the polymer as demonstrated by 13C CP/MAS NMR and IR spectroscopy, the absence of carboxylic protons in solid state 1H NMR spectra indicate that they are mobile. We link the extraordinary stability of this system to the rigid nature, cross-linking through a hydrogen-bonded network and a partially oxidized state.
Serdar N Sariciftci - One of the best experts on this subject based on the ideXlab platform.
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characterization of n n bis 2 1 hydoxy 4 methylpentyl 3 4 9 10 perylene bis dicarboximide sensitized nanocrystalline tio2 solar cells with Polythiophene hole conductors
Solar Energy Materials and Solar Cells, 2005Co-Authors: Ceylan Zafer, Canan Karapire, Serdar N Sariciftci, Siddik IcliAbstract:Abstract We have fabricated solid-state, dye-sensitized nanocrystalline TiO2 solar cells (DSSC) based on perylene derivative dye, N,N′-bis-2-(1-hydoxy-4-methylpentyl)-3,4,9,10-perylene bis (dicarboximide) (HMPER) with two different Polythiophenes as hole conductors; i.e. poly (3-octyl thiophene) (P3OT) and poly (3-hexyl thiophene) (P3HT), respectively. HMPER adsorbs strongly to the surface of nanocrystalline TiO2 and inject electrons into TiO2 conduction band upon absorption of light. Polythiophene derivatives are well-known materials as hole conductors in solid-state dye-sensitized solar cells. We obtained quite similar results with P3OT and P3HT yielding a short-circuit current density of around 80 μA/cm2 and open-circuit voltage of around 0.7 V at 80 mW/cm2 AM 1.5 light intensity. The results are compared with Ru-535 TBA-sensitized nc-TiO2 cells prepared by using the same Polythiophene derivatives.
