Meniscus-guided coating of organic crystalline thin films for high-performance organic field-effect transistors

Abstract

In this review, recently reported strategies applied to control the morphology, molecule packing, and orientation of organic semiconductors thin films in the context of meniscus-guided coating techniques are summarized and discussed.

Metal phthalocyanines: thin-film formation, microstructure, and physical properties

“…Meniscus-guided coating methods are scalable large area techniques that use the linear movement of either the substrate, or coating tool, to fabricate thin-lms with uniformly aligned crystal growth. 52,54 Dip coating, involving the vertical withdrawal of a substrate from a solution bath, blade coating, involving the use of a at rectangular edge to spread solution across a substrate, and slot die coating, involving the ow of solution through an orice and shaping device onto a horizontally moving substrate are common examples of meniscus-guided coating methods. 52,54 The alignment and size of the growing crystallites relies on the shear force directing solution ow and is largely inuenced by the speed at which movement occurs.…”

“…[75][76][77] A number of models have been purposed to describe n e most of which take on the general form of eqn (8). 54,77,78 n e ¼ AV m T s 0:…”

Flexible organic optoelectronic devices on paper

“…As a variable current switch, the transistor can control the output current based on the input voltage. Organic thin-film transistors (OTFTs) have been demonstrated an excellent performance ( Deng et al., 2021 ; Kim et al., 2020 , 2021 ; Lu et al., 2020 ; Makita et al., 2021 ).…”

Solution Processable Pentafluorophenyl End‐Capped Dithienothiophene Organic Semiconductors for Hole‐Transporting Organic Field Effect Transistors

“…[1] Due to their diverse applications as electro-active materials, organic semiconductors have gained attention for the development of low-cost, large-area printable, and flexible electronic devices such as organic field effect transistors (OFETs), organic light-emitting diodes (OLEDs), and organic photovoltaics (OPVs). [2][3][4][5][6][7][8][9][10][11][12][13] In contrast to the traditional inorganic materials, organic semiconductors are promising essential components for future optoelectronic devices. [14][15] The well-known acenebased organic semiconductors (OSCs), [16][17][18] such as pentacenes [19][20] have attracted much attention because of their excellent charge transport properties.…”