Direct Photolithography on Molecular Crystals for High Performance Organic Optoelectronic Devices

• DOI: 10.1021/jacs.8b03526
• Publication Date: 2018-05-10T21:03:27Z
• Authors: Yifan Yao; Lei Zhang; Tim Leydecker; Paolo Samorì
• Keywords: 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 7. Clean energy; 0104 chemical sciences

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