Discotic mesophase materials

Their use in organic field-effect transistors and organic photovoltaics

Neal R Armstrong, Wei Xia, Britt Minch, Adam Simmonds, Chet Carter, Carrie L. Donley, Rebecca A P Zangmeister, Anthony Drager, Samir K. Cherian, Lynn LaRussa, Bernard Kippelen, Seunghyup Yoo, Benoit Domercq, David L. Mathine, David F. O'Brien

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

New discotic mesophase materials, especially those based on phthalocyanines, have become increasingly interesting as charge transport and photoactive materials for new molecular electronic technologies (organic field-effect transistors (OFETs) and organic photovoltaics (OPVs)). Side chains added to the periphery of these molecules render them solution processable and enhance the coherence in their rod-like aggregates. It has been hypothesized that these columnar aggregates will provide for charge mobilities competitive with amorphous silicon (ca. 1 cm 2/volt-sec), when the coherence length exceeds ca. 100 nm, and the processing conditions lead to thin films with low charge trap densities, and good electrical contacts (source and drain electrodes in OFETs; anodes/cathodes In OPVs). Our work with octa-substituted phthalocyanines, where the alkoxy- or thio-ether-linked side chains are terminated with benzyl groups, has shown that it is possible to achieve the desired coherence and electrical properties on sub-micron length scales (measured by conductive-tip AFM), but that achieving the desired device properties still requires optimization to achieve i) low contact resistances, and ii) the proper column orientation for both OFET and OPVs.

Original languageEnglish (US)
Title of host publicationProceedings - Electrochemical Society
Pages376-384
Number of pages9
VolumePV 2004-22
StatePublished - 2006
Event205th Electrochemical Society Meeting - San Antonio, TX, United States
Duration: May 9 2004May 14 2004

Other

Other205th Electrochemical Society Meeting
CountryUnited States
CitySan Antonio, TX
Period5/9/045/14/04

Fingerprint

Organic field effect transistors
Molecular electronics
Contact resistance
Amorphous silicon
Charge transfer
Ethers
Anodes
Electric properties
Cathodes
Thin films
Electrodes
Molecules
Processing

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Armstrong, N. R., Xia, W., Minch, B., Simmonds, A., Carter, C., Donley, C. L., ... O'Brien, D. F. (2006). Discotic mesophase materials: Their use in organic field-effect transistors and organic photovoltaics. In Proceedings - Electrochemical Society (Vol. PV 2004-22, pp. 376-384)

Discotic mesophase materials : Their use in organic field-effect transistors and organic photovoltaics. / Armstrong, Neal R; Xia, Wei; Minch, Britt; Simmonds, Adam; Carter, Chet; Donley, Carrie L.; Zangmeister, Rebecca A P; Drager, Anthony; Cherian, Samir K.; LaRussa, Lynn; Kippelen, Bernard; Yoo, Seunghyup; Domercq, Benoit; Mathine, David L.; O'Brien, David F.

Proceedings - Electrochemical Society. Vol. PV 2004-22 2006. p. 376-384.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Armstrong, NR, Xia, W, Minch, B, Simmonds, A, Carter, C, Donley, CL, Zangmeister, RAP, Drager, A, Cherian, SK, LaRussa, L, Kippelen, B, Yoo, S, Domercq, B, Mathine, DL & O'Brien, DF 2006, Discotic mesophase materials: Their use in organic field-effect transistors and organic photovoltaics. in Proceedings - Electrochemical Society. vol. PV 2004-22, pp. 376-384, 205th Electrochemical Society Meeting, San Antonio, TX, United States, 5/9/04.
Armstrong NR, Xia W, Minch B, Simmonds A, Carter C, Donley CL et al. Discotic mesophase materials: Their use in organic field-effect transistors and organic photovoltaics. In Proceedings - Electrochemical Society. Vol. PV 2004-22. 2006. p. 376-384
Armstrong, Neal R ; Xia, Wei ; Minch, Britt ; Simmonds, Adam ; Carter, Chet ; Donley, Carrie L. ; Zangmeister, Rebecca A P ; Drager, Anthony ; Cherian, Samir K. ; LaRussa, Lynn ; Kippelen, Bernard ; Yoo, Seunghyup ; Domercq, Benoit ; Mathine, David L. ; O'Brien, David F. / Discotic mesophase materials : Their use in organic field-effect transistors and organic photovoltaics. Proceedings - Electrochemical Society. Vol. PV 2004-22 2006. pp. 376-384
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AU - Drager, Anthony

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