Single crystal, liquid crystal, and hybrid organic semiconductors

Robert J. Twieg; Y. Getmanenko; Z. Lu; A. N. Semyonov; S. Huang; P. He; A. Seed; A. Kiryanov; B. Ellman; S. Nene

doi:10.1117/12.475448

14 July 2003 Single crystal, liquid crystal, and hybrid organic semiconductors

Robert J. Twieg, Y. Getmanenko, Z. Lu, A. N. Semyonov, S. Huang, P. He, A. Seed, A. Kiryanov, B. Ellman, S. Nene

Proceedings Volume 4991, Organic Photonic Materials and Devices V; (2003) https://doi.org/10.1117/12.475448
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

The synthesis and characterization of organic semiconductors is being pursued in three primary structure formats: single crystal, liquid crystal and organic-inorganic hybrid. The strategy here is to share common structures, synthesis methods and fabrication techniques across these formats and to utilize common characterization tools such as the time of flight technique. The single crystal efforts concentrate on aromatic and heteroaromatic compounds including simple benzene derivatives and derivatives of the acenes. The structure-property relationships due to incorporation of small substituents and heteroatoms are being examined. Crystals are grown by solution, melt or vapor transport techniques. The liquid crystal studies exploit their self-organizing properties and relative ease of sample preparation. Though calamitic systems tha deliver the largest mobilities are higher order smectics, even some unusual twist grain boundary phases are being studied. We are attempting to synthesize discotic acene derivatives with appropriate substitution patterns to render them mesogenic. The last format being examined is the hybrid organic-inorganic class. Here, layered materials of alternating organic and inorganic composition are designed and synthesized. Typical materials are conjugated aromatic compounds, usually functinalized with an amine or a pyridine and reacted with appropriate reactive metal derivatives to incorporate them into metal oxide or sulfide layers.

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Robert J. Twieg, Y. Getmanenko, Z. Lu, A. N. Semyonov, S. Huang, P. He, A. Seed, A. Kiryanov, B. Ellman, and S. Nene "Single crystal, liquid crystal, and hybrid organic semiconductors", Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); https://doi.org/10.1117/12.475448

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