Controlling the molecular orientation of a novel diketopyrrolopyrrole-based organic conjugated polymer for enhancing the performance of organic field-effect transistors

Desu, Moulika; Sharma, Shubham; Cheng, Kuang-Hao; Wang, Yu-Han; Nagamatsu, Shuichi; Chen, Jyh‐Chien; Pandey, Shyam S.

doi:10.1016/j.orgel.2022.106691

Cited by 9 publications

(8 citation statements)

References 35 publications

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“…Figure (c) illustrates the influence of varying C 3 N 5 content on the effective charge transport characteristics, in terms of μ normals normala normalt . Notably, the mobility value obtained for the composite film is relatively high compared to previously reported values for an isotropic film Figure (d) demonstrates a positive shift in the threshold voltage ( V normalt normalh ) for the OFETs utilizing DPP-TTT/C 3 N 5 nanohybrids compared to pristine DPP-TTT.…”

Section: Resultsmentioning

confidence: 99%

Template-Assisted Assembly of DPP-TTT over a Hydrophilic Liquid Subphase toward Enhanced Charge Transport in Organic Field-Effect Transistors

Shyam,

Jana,

Manaka

et al. 2024

ACS Appl. Polym. Mater.

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The progress in flexible electronics significantly benefits from improvements in charge transport within organic field-effect transistors (OFETs). The techniques used to incorporate organic conjugated polymers (CPs) into devices greatly influence their performance. In this study, we introduce an innovative method that utilizes the flexibility and solutionprocessing capabilities of donor−acceptor (D−A) type CPs, combined with the electrical conductivity and durability of twodimensional (2D) organic materials in a composite mixture. Furthermore, during the production of thin films via the "unidirectional floating film transfer method (UFTM)", it was observed that 2D organic C 3 N 5 nanosheets enhance the organization of the D−A polymer, poly[2,5-(2-octyl-dodecyl)-3,6-diketopyrrolopyrrole-alt-5,5-(2,5-di(thien-2-yl) thieno[3,2-b] thiophene)] (DPP-TTT), on a hydrophilic liquid base, acting as a structural scaffold. This approach promotes the development of well-ordered DPP-TTT arrays, improving π−π stacking and intermolecular forces, which are essential for efficient charge transport. The OFETs crafted using this technique show a remarkable increase in charge carrier mobility, up to 0.41 cm 2 /(V s), with on/off ratios of 10 4 and superior operational durability. Our findings highlight the effectiveness of scaffold-assisted assembly on a liquid phase and the combined benefits of D−A polymers with 2D organic materials, offering a powerful approach for creating organic semiconductors with enhanced electrical characteristics. This opens promising pathways for advancing high-performance flexible electronic devices.

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Section: Resultsmentioning

confidence: 99%

Template-Assisted Assembly of DPP-TTT over a Hydrophilic Liquid Subphase toward Enhanced Charge Transport in Organic Field-Effect Transistors

Shyam,

Jana,

Manaka

et al. 2024

ACS Appl. Polym. Mater.

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“…For conventional lateral OFETs, the current density is primarily determined by the carrier mobility of organic semiconductors. 28 While in this type of device, carrier mobility is not the main limiting factor. 25 Further investigation indicated that the injection barrier at the heterojunction and the overall device resistance play pivotal roles.…”

Section: Introductionmentioning

confidence: 99%

A design strategy for high-performance vertical organic field-effect transistors based on reduced graphene oxide electrodes

Qiao,

Dai,

Zou

2024

J. Mater. Chem. C

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“…One approach to enhancing the charge transport in organic semiconductors is through the use of dopants, which can introduce additional charge carriers and improve conductivity [ 3 ]. Another strategy involves optimising the morphology of the material, such as by controlling the orientation and packing of molecules to minimise disorder and enhance charge transport pathways [ 4 ]. Additionally, incorporating interfacial layers between the organic semiconductor and other materials in a device can help improve charge injection and extraction [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Traps and Lorentz Force on Charge Transport in Organic Semiconductors

2023

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Charge transport characteristics in organic semiconductor devices become altered in the presence of traps due to defects or impurities in the semiconductors. These traps can lead to a decrease in charge carrier mobility and an increase in recombination rates, thereby ultimately affecting the overall performance of the device. It is therefore important to understand and mitigate the impact of traps on organic semiconductor devices. In this contribution, the influence of the capture and release times of trap states, recombination rates, and the Lorentz force on the net charge of a low-mobility organic semiconductor was determined using the finite element method (FEM) and Hall effect method through numerical simulations. The findings suggest that increasing magnetic fields had a lesser impact on net charge at constant capture and release times of trap states. On the other hand, by increasing the capture time of trap states at a constant magnetic field and fixed release time, the net charge extracted from the semiconductor device increased with increasing capture time. Moreover, the net charge extracted from the semiconductor device was nearly four and eight times greater in the case of the non-Langevin recombination rates of 0.01 and 0.001, respectively, when compared to the Langevin rate. These results imply that the non-Langevin recombination rate can significantly enhance the performance of semiconductor devices, particularly in applications that require efficient charge extraction. These findings pave the way for the development of more efficient and cost-effective electronic devices with improved charge transport properties and higher power conversion efficiencies, thus further opening up new avenues for research and innovation in this area of modern semiconductor technology.

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Controlling the molecular orientation of a novel diketopyrrolopyrrole-based organic conjugated polymer for enhancing the performance of organic field-effect transistors

Cited by 9 publications

References 35 publications

Template-Assisted Assembly of DPP-TTT over a Hydrophilic Liquid Subphase toward Enhanced Charge Transport in Organic Field-Effect Transistors

Template-Assisted Assembly of DPP-TTT over a Hydrophilic Liquid Subphase toward Enhanced Charge Transport in Organic Field-Effect Transistors

A design strategy for high-performance vertical organic field-effect transistors based on reduced graphene oxide electrodes

Influence of Traps and Lorentz Force on Charge Transport in Organic Semiconductors

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