Direct Photolithography on Molecular Crystals for High Performance Organic Optoelectronic Devices

en

140

22

6984

6990

2018-05-10

2018-06

0002-7863
1520-5126

Journal of the American Chemical Society

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 Show moreOrganic 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. Show less

American Chemical Society

J. Am. Chem. Soc.

ACL

Labex project CSC (ANR-10-LABX-0026 CSC) ; Investissement d’Avenir program ANR-10-IDEX-0002-02

ERC Proof-of-Concept project FlexNanoOLED (GA-766936) and the Marie Curie ITN project iSwitch (GA No. 642196)

Chimie/Matériaux

aut

International