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Direct Photolithography on Molecular Crystals for High Performance Organic Optoelectronic Devices

Direct Photolithography on Molecular Crystals for High Performance Organic Optoelectronic Devices

Yifan Yao, Lei Zhang, Tim Leydecker, Paolo Samorì

J Am Chem Soc. 2018 Jun 6;140(22):6984-6990.

PMID: 29746772

Abstract:

Organic crystals are generated via the bottom-up self-assembly of molecular building blocks which are held together through weak noncovalent interactions. Although they revealed extraordinary charge transport characteristics, their labile nature represents a major drawback toward their integration in optoelectronic devices when the use of sophisticated patterning techniques is required. Here we have devised a radically new method to enable the use of photolithography directly on molecular crystals, with a spatial resolution below 300 nm, thereby allowing the precise wiring up of multiple crystals on demand. Two archetypal organic crystals, i.e., p-type 2,7-diphenyl[1]benzothieno[3,2- b][1]benzothiophene (Dph-BTBT) nanoflakes and n-type N, N'-dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) nanowires, have been exploited as active materials to realize high-performance top-contact organic field-effect transistors (OFETs), inverter and p-n heterojunction photovoltaic devices supported on plastic substrate. The compatibility of our direct photolithography technique with organic molecular crystals is key for exploiting the full potential of organic electronics for sophisticated large-area devices and logic circuitries, thus paving the way toward novel applications in plastic (opto)electronics.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP76372753	N,N′-Dipentyl-3,4,9,10-perylenedicarboximide		76372-75-3	Price
LS773101	2,7-Diphenyl[1]benzothieno[3,2-b][1]benzothiophene			Price

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