Heteroatom Substituted Organic/Polymeric Semiconductors and their Applications in Field‐Effect Transistors

Zhang, Weifeng; Liu, Yunqi; Yu, Gui

doi:10.1002/adma.201305297

Cited by 85 publications

(65 citation statements)

References 65 publications

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“…20 Since the first demonstration of an OFET in 1986, 21 the transport properties of a plethora of OSCs were measured in OFET devices and their applicability in electronic devices was demonstrated. 20,[22][23][24][25] The performance of organic semiconductors in OFETs has improved steadily over the last decade. Charge carrier mobility (m), defined as the drift velocity under unit potential gradient, is the most important parameter to fabricate high performance OFET devices.…”

Section: Introductionmentioning

confidence: 99%

Trends in molecular design strategies for ambient stable n-channel organic field effect transistors

2017

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aIn recent years, organic semiconducting materials have enabled technological innovation in the field of flexible electronics. Substantial optimization and development of new p-conjugated materials has resulted in the demonstration of several practical devices, particularly in displays and photoreceptors.However, applications of organic semiconductors in bipolar junction devices, e.g. rectifiers and inverters, are limited due to an imbalance in charge transport. The performance of p-channel organic semiconducting materials exceeds that of electron transport. In addition, electron transport in p-conjugated materials exhibits poorer atmospheric stability and dispersive transient photocurrents due to extrinsic carrier trapping. Thus development of air stable n-channel conjugated materials is required. New classes of materials with delocalized n-doped states are under development, aiming at improvement of the electron transport properties of organic semiconductors. In this review, we highlight the basic tenets related to the stability of n-channel organic semiconductors, primarily focusing on the thermodynamic stability of anions and summarizing the recent progress in the development of air stable electron transporting organic semiconductors. Molecular design strategies are analysed with theoretical investigations.

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Section: Introductionmentioning

confidence: 99%

Trends in molecular design strategies for ambient stable n-channel organic field effect transistors

2017

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“…The nitrogen atom is a versatile heteroatom, which can be used as an sp 2 hybridization form, such as pyrrole-nitrogen and pyridine-nitrogen, sp 3 and sp hybridization forms [193]. Because the lone pair of pyrrole-nitrogen is delocalized in aromatic systems, the related semiconductors have high HOMO and LUMO energy levels, and thus tend to exhibit p-type transport characteristics.…”

Section: Azaacenesmentioning

confidence: 99%

Organic Semiconductors for Field-Effect Transistors

Zhang

2015

Lecture Notes in Chemistry

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An important application of organic semiconductors is to fabricate organic field-effect transistors (OFETs) which are essential building blocks for the next generation of organic circuits. In terms of molecular size or molecular weight, organic semiconductors can be divided into small-molecule and polymer semiconductors, and thus their corresponding OFETs can also be categorized into organic small molecule OFETs and polymer field-effect transistors (PFETs). On the basis of the main charge carriers transporting in OFET channels, organic semiconductors can be further divided into p-type, n-type, and ambipolar semiconducting materials. According to the characteristic of the organic semiconductors, the OFETs can be classified into two types: organic thin film transistors (OTFTs) and organic single crystal transistors. In any kind of OFET devices, organic semiconductor materials are the core; their properties determine the performance of the electronic devices. Therefore, the design and synthesis of high performance organic semiconductor materials are the basis and premise of the wide application of OFET devices. In the past few decades, great progress has been made in developing organic semiconductors. Besides organic semiconducting materials, there are many other factors influencing the performance of OFETs including device configuration, processing technique, and other devices physical factors, etc. In the following, a brief review of the development of p-type, n-type, ambipolar organic semiconductors and their field-effect properties is given. The history, mechanism, configuration, and fabrication methods of OFET devices and main performance influencing factors of OFETs are also introduced.

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“…After this, we fabricate OTFT device designed as bottom gate-top contact using this novel CoPc as a semiconductor layer. In the literature, there are various electronic device applications performed by using several molecules having alkyl chain [38][39][40][41]. We have also investigated electrical characterization of the OTFT of the new synthesis CoPc layer and composite semiconductor material.…”

Section: Introductionmentioning

confidence: 99%

Nonperipheral tetra phthalocyanines bearing alkyl chain moiety; Synthesis, characterization and fabrication of the OFET based on phthalocyanine

et al. 2015

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Heteroatom Substituted Organic/Polymeric Semiconductors and their Applications in Field‐Effect Transistors

Cited by 85 publications

References 65 publications

Trends in molecular design strategies for ambient stable n-channel organic field effect transistors

Trends in molecular design strategies for ambient stable n-channel organic field effect transistors

Organic Semiconductors for Field-Effect Transistors

Nonperipheral tetra phthalocyanines bearing alkyl chain moiety; Synthesis, characterization and fabrication of the OFET based on phthalocyanine

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