Abstract
To this day, the active components of integrated circuits consist mostly of (semi-)metals. Concerns for raw material supply and pricing aside, the overreliance on (semi-)metals in electronics limits our abilities (i) to tune the properties and composition of the active components, (ii) to freely process their physical dimensions, and (iii) to expand their deployment to applications that require optical transparency, mechanical flexibility, and permeability. 2D organic semiconductors match these criteria more closely. In this review, we discuss a number of 2D organic materials that can facilitate charge transport across and in-between their π-conjugated layers as well as the challenges that arise from modulation and processing of organic polymer semiconductors in electronic devices such as organic field-effect transistors.
Highlights
To this day, the active components of integrated circuits consist mostly ofmetals
In this review we map out the landscape of organic layered semiconductors, the strong points of the individual material types and the challenges the field has to overcome to produce materials applicable in flexible, high-performance, low-cost, low-power electronics
Doping of graphene with boron and nitrogen defect sites alters the electronic structure, but the surrounding semimetallic domains typically dominate the electronic properties of the B/N doped graphene in device architectures
Summary
Commercial silicon technology can currently mass-produce feature sizes of 5 nm, but short-channel effects,[3] no increase in clock frequency, and extremely costly lithography become increasingly deterrent.[4]. To find suitable materials that match these criteria, organic molecular (0D) and linear polymeric semiconductors (1D) are widely researched.[7,8] these materials often suffer from low structural order, low amounts of charge carriers and high concentrations of defect sites, leading to low mobility and high injection barriers. Some of these shortcomings were resolved by spatially defined doping and attempts at increasing order in these systems by point-anchoring, supramolecular assembly or by liquid crystallinity. In this review we map out the landscape of organic layered semiconductors, the strong points of the individual material types and the challenges the field has to overcome to produce materials applicable in flexible, high-performance, low-cost, low-power electronics
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