Improvement in Mobility and Stability of n-Type Organic Field-Effect Transistors with a Hole Transporting Interfacial Layer

Nakayama, Keiichi I.; Ishikawa, Motomi; Yokoyama, Masaaki

doi:10.1143/apex.2.021501

Cited by 8 publications

(5 citation statements)

References 16 publications

(26 reference statements)

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“…This can be explained by the electron donating property of the HTL material. Nakayama et al reported that surface traps can be occupied by electrons donated from the HTL material 10. In the same manner, electrons donated from the PVK in this work fill the trap states at the interface.…”

Section: Resultssupporting

confidence: 62%

“…Nakayama et al first reported the use of an electrically active material as an interfacial layer. Small molecule HTL materials were used as the interfacial layer to enhance the air stability of n‐OFET 10. On the other hand, small molecules usually exhibit low T g , which suggests that high crystallinity of the active layer cannot be obtained by thermal annealing.…”

Section: Introductionmentioning

confidence: 99%

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Air stability of PTCDI‐C13‐based n‐OFETs on polymer interfacial layers

Roh

Lee

Kang

et al. 2013

Physica Rapid Research Ltrs

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This Letter reports the novel use of poly(9‐vinylcarbazole) (PVK) as a dielectric interfacial layer for n‐type organic field‐effect transistors (n‐OFETs). With PVK, both the air stability and electron mobility of N,N′‐ditridecylperylene‐3,4,9,10‐tetracarboxylic diimide (PTCDI‐C13)‐based OFETs were improved. Among the PVKs with different weight‐average molecular weight (Mw), PVK with high Mw showed good performance. The high glass transition temperature of PVK enabled thermal post annealing of the active layer, which resulted in a high electron mobility of 0.61 cm2/Vs. This mobility was maintained at 90% and 59% after 4 days and 105 days in air, respectively. The PVK interfacial layer reduced the trapped charges in the PTCDI‐C13‐based n‐OFET for air‐exposure and caused a decrease in the threshold voltage shift. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Resultssupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Air stability of PTCDI‐C13‐based n‐OFETs on polymer interfacial layers

Roh

Lee

Kang

et al. 2013

Physica Rapid Research Ltrs

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“…108 Another example worth to be mentioned concerns the application of the hole transporting interfacial layer between SiO 2 and semiconductor layer. 116 Much fewer studies are devoted to PBIs with branched alkyl substituents as n-type materials, but these compounds are very interesting for their fluorescent properties (see for example ref. 117).…”

Section: Aromatic Bisimidesmentioning

confidence: 99%

Electroactive materials for organic electronics: preparation strategies, structural aspects and characterization techniques

et al. 2010

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This critical review discusses specific chemical and physicochemical requirements which must be met for organic compounds to be considered as promising materials for applications in organic electronics. Although emphasis is put on molecules and macromolecules suitable for fabrication of field effect transistors (FETs), a large fraction of the discussed compounds can also be applied in other organic or hybrid (organic-inorganic) electronic devices such as photodiodes, light emitting diodes, photovoltaic cells, etc. It should be of interest to chemists, physicists, material scientists and electrical engineers working in the domain of organic electronics (423 references).

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“…15 Recently, stabilization of the LC blue phase over a broad temperature range was achieved using gold nanoparticles localized to the defect cores. 16 While the effects of nanoparticles on an LC host phase have been studied, less is known about how the LC medium affects the properties of the dispersed nanoparticles, and whether it is possible to use LC materials to achieve new types of directed nanoscale assemblies that would manifest novel functionality.…”

Section: Introductionmentioning

confidence: 99%

Spectral and polarization modulation of quantum dot emission in a one-dimensional liquid crystal photonic cavity

et al. 2012

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We demonstrate spectral and polarization modulation of chemically synthesized core-shell CdSe/ZnS quantum dots (QDs) embedded in a one-dimensional photonic cavity formed by a cholesteric liquid crystal (CLC) matrix. A Cano-wedge cell varies the pitch of the CLC leading to the formation of Grandjean steps. This spatially tunes the photonic stop band, changing the resonance condition and continuously altering both the emission wavelength and polarization state of the QD ensemble. Using high resolution spatially and spectrally resolved photoluminescence measurements, we find that the emission is elliptically polarized and that the tilt of the ellipse, while dependent on the emission wavelength, additionally varies with distance across the Grandjean steps. This work opens up the possibility of designing new QD based optical devices, such as tunable single photon sources, where spatial control of wavelength and polarization of the embedded QDs would allow great flexibility and added functionalities.

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Improvement in Mobility and Stability of n-Type Organic Field-Effect Transistors with a Hole Transporting Interfacial Layer

Cited by 8 publications

References 16 publications

Air stability of PTCDI‐C13‐based n‐OFETs on polymer interfacial layers

Air stability of PTCDI‐C13‐based n‐OFETs on polymer interfacial layers

Electroactive materials for organic electronics: preparation strategies, structural aspects and characterization techniques

Spectral and polarization modulation of quantum dot emission in a one-dimensional liquid crystal photonic cavity

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