33806
2013
2013
eng
article
1
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Alkylated-C60 based soft materials: regulation of self-assembly and optoelectronic properties by chain branching
Derivatization of fullerene (C60) with branched aliphatic chains softens C60-based materials and enables the formation of thermotropic liquid crystals and room temperature nonvolatile liquids. This work demonstrates that by carefully tuning parameters such as type, number and substituent position of the branched chains, liquid crystalline C60 materials with mesophase temperatures suited for photovoltaic cell fabrication and room temperature nonvolatile liquid fullerenes with tunable viscosity can be obtained. In particular, compound 1, with branched chains, exhibits a smectic liquid crystalline phase extending from 84°C to room temperature. Analysis of bulk heterojunction (BHJ) organic solar cells with a ca. 100 nm active layer of compound 1 and poly(3-hexylthiophene) (P3HT) as an electron acceptor and an electron donor, respectively, reveals an improved performance (power conversion efficiency, PCE: 1.6 ñ 0.1%) in comparison with another compound, 10 (PCE: 0.5 ñ 0.1%). The latter, in contrast to 1, carries linear aliphatic chains and thus forms a highly ordered solid lamellar phase at room temperature. The solar cell performance of 1 blended with P3HT approaches that of PCBM/P3HT for the same active layer thickness. This indicates that C60 derivatives bearing branched tails are a promising class of electron acceptors in soft (flexible) photovoltaic devices.
http://pubs.rsc.org/en/content/articlepdf/2013/tc/c3tc00066d
10.1039/C3TC00066D
allegro:1991-2014
10111465
Journal of materials chemistry / C. - 10 (2013), 1, S. 1943 - 1951
Hongguang Li
Sukumaran Santhosh Babu
Sarah T. Turner
Dieter Neher
Martin J. Hollamby
Seki Tomohito
Shiki Yagai
Yonekazu deguchi
Helmuth Möhwald
Takashi Nakanishi
Institut für Chemie
35398
2013
2013
eng
1943
1951
9
10
1
article
Royal Society of Chemistry
Cambridge
1
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Alkylated-C-60 based soft materials regulation of self-assembly and optoelectronic properties by chain branching
Derivatization of fullerene (C-60) with branched aliphatic chains softens C-60-based materials and enables the formation of thermotropic liquid crystals and room temperature nonvolatile liquids. This work demonstrates that by carefully tuning parameters such as type, number and substituent position of the branched chains, liquid crystalline C-60 materials with mesophase temperatures suited for photovoltaic cell fabrication and room temperature nonvolatile liquid fullerenes with tunable viscosity can be obtained. In particular, compound 1, with branched chains, exhibits a smectic liquid crystalline phase extending from 84 degrees C to room temperature. Analysis of bulk heterojunction (BHJ) organic solar cells with a ca. 100 nm active layer of compound 1 and poly(3-hexylthiophene) (P3HT) as an electron acceptor and an electron donor, respectively, reveals an improved performance (power conversion efficiency, PCE: 1.6 + 0.1%) in comparison with another compound, 10 (PCE: 0.5 + 0.1%). The latter, in contrast to 1, carries linear aliphatic chains and thus forms a highly ordered solid lamellar phase at room temperature. The solar cell performance of 1 blended with P3HT approaches that of PCBM/P3HT for the same active layer thickness. This indicates that C-60 derivatives bearing branched tails are a promising class of electron acceptors in soft (flexible) photovoltaic devices.
Journal of materials chemistry : C, Materials for optical and electronic devices
10.1039/c3tc00066d
2050-7526
wos:2011-2013
WOS:000314894300004
Li, HG (reprint author), Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany.
MEXT, Japan [2010, 23685033, 23111723]
Hongguang Li
Sukumaran Santhosh Babu
Sarah T. Turner
Dieter Neher
Martin J. Hollamby
Tomohiro Seki
Shiki Yagai
Yonekazu Deguchi
Helmuth Möhwald
Takashi Nakanishi
Institut für Physik und Astronomie
Referiert
9535
2013
2013
eng
1943
1951
postprint
1
--
2013-01-18
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Alkylated-C60 based soft materials
Derivatization of fullerene (C60) with branched aliphatic chains softens C60-based materials and enables the formation of thermotropic liquid crystals and room temperature nonvolatile liquids. This work demonstrates that by carefully tuning parameters such as type, number and substituent position of the branched chains, liquid crystalline C60 materials with mesophase temperatures suited for photovoltaic cell fabrication and room temperature nonvolatile liquid fullerenes with tunable viscosity can be obtained. In particular, compound 1, with branched chains, exhibits a smectic liquid crystalline phase extending from 84 °C to room temperature. Analysis of bulk heterojunction (BHJ) organic solar cells with a ca. 100 nm active layer of compound 1 and poly(3-hexylthiophene) (P3HT) as an electron acceptor and an electron donor, respectively, reveals an improved performance (power conversion efficiency, PCE: 1.6 ± 0.1%) in comparison with another compound, 10 (PCE: 0.5 ± 0.1%). The latter, in contrast to 1, carries linear aliphatic chains and thus forms a highly ordered solid lamellar phase at room temperature. The solar cell performance of 1 blended with P3HT approaches that of PCBM/P3HT for the same active layer thickness. This indicates that C60 derivatives bearing branched tails are a promising class of electron acceptors in soft (flexible) photovoltaic devices.
regulation of selfassembly and optoelectronic properties by chain branching
urn:nbn:de:kobv:517-opus4-95358
online registration
J. Mater. Chem. C (2013) Nr. 1, S. 1943-1951. - DOI: 10.1039/C3TC00066D
Keine öffentliche Lizenz: Unter Urheberrechtsschutz
Hongguang Li
Sukumaran Santhosh Babu
Sarah T. Turner
Dieter Neher
Martin J. Hollamby
Tomohiro Seki
Shiki Yagai
Yonekazu Deguchi
Helmuth Möhwald
Takashi Nakanishi
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
250
Physik
Chemie und zugeordnete Wissenschaften
Ingenieurwissenschaften und zugeordnete Tätigkeiten
open_access
Institut für Chemie
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/9535/pmnr250_online.pdf