scholarly journals What is Special about Silicon in Functionalised Organic Semiconductors?

2021 ◽  
Author(s):  
Karl J Thorley ◽  
Micai Benford ◽  
Yang Song ◽  
Sean R. Parkin ◽  
Chad Risko ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
High Performance ◽  
Side Chain ◽  
Carbon Side Chain ◽  
Atomic Substitution

A carbon side-chain analogue to the high-performance organic semiconductor triethylsilylethynyl difluoroanthradithiophene has been synthesised and characterized. Atomic substitution of carbon for silicon results in subtle changes to opto-electronic properties, which...

scholarly journals Tailoring Molecular Weight of Polymer Additives for Organic Semiconductors

2022 ◽  
Author(s):  
Zhengran He ◽  
Ziyang Zhang ◽  
Sheng Bi
Keyword(s):  
Molecular Weight ◽  
Binary System ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
High Performance ◽  
Electronic Devices ◽  
Polymer Additives ◽  
Flexible Substrates ◽  
Polymer Additive

A binary system comprising both an organic semiconductor and a polymer additive has attracted extensive research interests due to great potential for high-performance, solution-proccessable electronic devices on flexible substrates. The...

scholarly journals Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 815 ◽  
Author(s):  
Sanyin Qu ◽  
Chen Ming ◽  
Qin Yao ◽  
Wanheng Lu ◽  
Kaiyang Zeng ◽  
...  
Keyword(s):  
Transport Properties ◽  
Organic Semiconductors ◽  
High Performance ◽  
Carrier Mobility ◽  
Carrier Transport ◽  
Three Dimensional ◽  
Side Chain ◽  
Conductive Atomic Force Microscopy ◽  
Dynamics Simulations ◽  
Carrier Transport Properties

The fundamental understanding of the influence of molecular structure on the carrier transport properties in the field of organic thermoelectrics (OTEs) is a big challenge since the carrier transport behavior in conducting polymers reveals average properties contributed from all carrier transport channels, including those through intra-chain, inter-chain, inter-grain, and hopping between disordered localized sites. Here, combining molecular dynamics simulations and experiments, we investigated the carrier transport properties of doped highly oriented poly(3-hexylthiophene) (P3HT) films with different side-chain regioregularity. It is demonstrated that the substitution of side chains can not only take effect on the carrier transport edge, but also on the dimensionality of the transport paths and as a result, on the carrier mobility. Conductive atomic force microscopy (C-AFM) study as well as temperature-dependent measurements of the electrical conductivity clearly showed ordered local current paths in the regular side chain P3HT films, while random paths prevailed in the irregular sample. Regular side chain substitution can be activated more easily and favors one-dimensional transport along the backbone chain direction, while the irregular sample presents the three-dimensional electron hopping behavior. As a consequence, the regular side chain P3HT samples demonstrated high carrier mobility of 2.9 ± 0.3 cm2/V·s, which is more than one order of magnitude higher than that in irregular side chain P3HT films, resulting in a maximum thermoelectric (TE) power factor of 39.1 ± 2.5 μW/mK2 at room temperature. These findings would formulate design rules for organic semiconductors based on these complex systems, and especially assist in the design of high performance OTE polymers.

scholarly journals Exploring the Critical Thickness of Organic Semiconductor Layer for Enhanced Piezoresistive Sensitivity in Field-Effect Transistor Sensors

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1583 ◽  
Author(s):  
Damien Thuau ◽  
Katherine Begley ◽  
Rishat Dilmurat ◽  
Abduleziz Ablat ◽  
Guillaume Wantz ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Field Effect ◽  
High Performance ◽  
Critical Thickness ◽  
Field Effect Transistors ◽  
Mechanical Strain ◽  
Semiconductor Layer ◽  
Organic Field Effect Transistors ◽  
P Type

Organic semiconductors (OSCs) are promising transducer materials when applied in organic field-effect transistors (OFETs) taking advantage of their electrical properties which highly depend on the morphology of the semiconducting film. In this work, the effects of OSC thickness (ranging from 5 to 15 nm) on the piezoresistive sensitivity of a high-performance p-type organic semiconductor, namely dinaphtho [2,3-b:2,3-f] thieno [3,2–b] thiophene (DNTT), were investigated. Critical thickness of 6 nm thin film DNTT, thickness corresponding to the appearance of charge carrier percolation paths in the material, was demonstrated to be highly sensitive to mechanical strain. Gauge factors (GFs) of 42 ± 5 and −31 ± 6 were measured from the variation of output currents of 6 nm thick DNTT-based OFETs engineered on top of polymer cantilevers in response to compressive and tensile strain, respectively. The relationship between the morphologies of the different thin films and their corresponding piezoresistive sensitivities was discussed.

Isothermal crystallization and time-temperature-transformation diagram of the organic semiconductor 5,11-bis(triethylsilylethynyl)anthradithiophene

2021 ◽  
Author(s):  
Liyang Yu ◽  
Andrew M. Zeidell ◽  
John E. Anthony ◽  
Oana D. Jurchescu ◽  
Christian Müller
Keyword(s):  
Electronic Properties ◽  
Thermal Annealing ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Isothermal Crystallization ◽  
Annealing Temperature ◽  
Trial And Error ◽  
Optimal Annealing Temperature ◽  
Temperature Transformation ◽  
Selection Of

Thermal annealing of organic semiconductors is critical for optimization of their electronic properties. The selection of the optimal annealing temperature –often done on a trial-and-error basis– is essential for achieving...

scholarly journals Theoretical study of the influence of doped oxygen group elements on the properties of organic semiconductors

2021 ◽  
Author(s):  
Anmin Liu ◽  
Mengfan Gao ◽  
Yan Ma ◽  
Xuefeng Ren ◽  
Liguo Gao ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
High Performance ◽  
High Stability ◽  
Theoretical Study ◽  
Semiconductor Materials ◽  
Organic Semiconductor Materials ◽  
Oxygen Group

Doping oxygen group elements on the properties of organic semiconductor were studied by DFT; the doping of multi-element Te has high stability and mobility; provide guidance for preparing high-performance organic semiconductor materials.

Precise Patterning of Single Crystal Arrays of Organic Semiconductors by Patterned Microchannel Dip-coating Method for Organic Field-Effect Transistors

2021 ◽  
Author(s):  
Chaoqiang Wang ◽  
Zhengjun Lu ◽  
Wei Deng ◽  
Wanqin Zhao ◽  
Bei Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Organic Semiconductors ◽  
Organic Semiconductor ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Dip Coating ◽  
Organic Field Effect Transistors ◽  
Coating Method ◽  
Dip Coating Method

Control over the growth location and orientation of organic semiconductor single crystals (OSSCs) is of key importance to enable high-performance organic circuits. However, the previous approaches are difficult to create...

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