Organic Semiconductor Single Crystal Arrays: Preparation and Applications

Abstract

The study of organic semiconductor single crystal (OSSC) arrays has recently attracted considerable interest given their potential applications in flexible displays, smart wearable devices, biochemical sensors, etc. Patterning of OSSCs is the prerequisite for the realization of organic integrated circuits. Patterned OSSCs can not only decrease the crosstalk between adjacent organic field-effect transistors (OFETs), but also can be conveniently integrated with other device elements which facilitate circuits application. Tremendous efforts have been devoted in the controllable preparation of OSSC arrays, and great progress has been achieved. In this review, the general strategies for patterning OSSCs are summarized, along with the discussion of the advantages and limitations of different patterning methods. Given the identical thickness of monolayer molecular crystals (MMCs) which is beneficial to achieve super uniformity of OSSC arrays and devices, patterning of MMCs is also emphasized. Then, OFET performance is summarized with comparison of the mobility and coefficient of variation based on the OSSC arrays prepared by different methods. Furthermore, advances of OSSC array-based circuits and flexible devices of different functions are highlighted. Finally, the challenges that need to be tackled in the future are presented.

Photolithographic Rugged Electrode for High‐Density Low‐Contact‐Resistance Coplanar Organic Transistors

“…This result demonstrates that the device can still exhibit good electrical performance even on uneven surfaces, showing the application potential in the wearable and conformable electronics. [52][53][54]…”

Solution-Processed Monolayer Molecular Crystals: From Precise Preparation to Advanced Applications

“…Patterning organic semiconductor crystals is an urgent prerequisite for practical optoelectronic applications. Considerable efforts have been devoted to developing the patterning technologies, but there are still some challenges in patterning MMCs over large areas and at the ideal location. − Generally, template-assisted self-assembly is a common way to fabricate arrays. Recently, the Hu group reported a two-step strategy to pattern the 2D organic semiconductor with the assistance of PDMS (poly(dimethylsiloxane)) templates .…”

Carrier density and delocalization signatures in doped carbon nanotubes from quantitative magnetic resonance

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