High-mobility pentacene thin-film phototransistor with poly-4-vinylphenol gate dielectric

Kwon, Jung Hwan; Chung, Myung Ho; Oh, Tae Yeon; Bae, Hyeon Seok; Park, Jung Ho; Ju, Byeong Kwon; Yakuphanoğlu, F.

doi:10.1016/j.sna.2009.10.011

Cited by 32 publications

(13 citation statements)

References 24 publications

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“…As far as we know, the best performance was obtained for 4(HPBT)‐benzene films120 with a maximum responsivity of 4300 A W −1 for a low optical power of 7 µW cm −2 (at zero gate bias). Another important parameter is the ratio of on and off current switching; various efforts129–136 show that photosensitivity can vary from 10 3 up to 10 7 in the case of an OTFT using a 6,13‐bis(penylphenylethynyl) pentacene film122 and working in the off state. Moreover, the highest switching speed of a transistor with n‐type copper hexadecafluorophthalocyanine channel was measured at 10 ms 123.…”

Section: Organic Phototransistorsmentioning

confidence: 99%

Organic transistors and phototransistors based on small molecules

Lucas

Trigaud

Videlot‐Ackermann

2011

Polymer International

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International audienceSignificant advances have been made recently in the area of organic electronics and optoelectronics based on small molecules as a result of the synthesis of new soluble and air-stable molecules. First reported 20 years ago, organic transistors quickly became a focus of intense research and development in academic and industrial laboratories. The great progress achieved thus far offers an opportunity for the production of new small electro-active molecules and the implementation of low-cost device fabrication technologies. This review focuses on recently synthesized p- or n-type organic semiconductors, particularly those suitable for fabrication of solution-processed and/or air-stable field effect transistors with an emphasis on low-cost wet processes. The numerous recent efforts realized in optoelectronics, particularly on phototransistors based on small molecules, offer various opportunities in applications for such organic compounds. Copyright © 2011 Society of Chemical Industr

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Section: Organic Phototransistorsmentioning

confidence: 99%

Organic transistors and phototransistors based on small molecules

Lucas

Trigaud

Videlot‐Ackermann

2011

Polymer International

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“…When the γ=0.5 and γ=1, the recombination processes of OFET can be explained with bimolecular recombination process and monomolecular recombination process, respectively [33,34]. When the value of γ is between 0.5 and 1, it indicates the presence of a steady distribution of trapping centers in the mobility gap of the materials [35]. The bimolecular recombination is the process of direct recombination of photo-generated holes and electrons in the valence band (tail) and conduction band (tail).…”

Section: (A) (B)mentioning

confidence: 99%

The Electrical Properties of Fabricated Pentacene Based Phototransistor with Polystyrene Gate Insulator

Rüzgar

Çağlar²

2020

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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In this study, the fabrication of top contact pentacene based phototransistor having polystyrene gate dielectric has been carried out. To analyze the surface morphology of polystyrene insulator and pentacene active layer, scanning electron microscopy (SEM) has been used. The electrical characterization of pentacene based phototransistor and also the effect of illumination on the output characteristics have been investigated. The obtained mobility value and on/off ratio of the transistor are 5×10 -3 cm 2 /Vs and ~10 2 , respectively. The increase of the drain current with increasing illumination intensity indicates that the light acts as an additional terminal. Also, this fabricated device behaves as a phototransistor because of its reaction to the illumination.

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“…The same correlation was reported for vacuum deposited films. [23][24][25][26][27] For thinner films printed at larger drop spacing of 20 lm, a high density of nanocrystalline is formed uniformly on either of the SAM-treated surfaces. It is inferred that the film growth on the SAM-treated substrates has been induced by interface nucleation; however, the crystal growth mode seems to be different.…”

Section: Printing and Characterization Of Tips-pen Filmsmentioning

confidence: 99%

Interfacial nucleation behavior of inkjet-printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on dielectric surfaces

Wang

Yuan

et al. 2015

Journal of Applied Physics

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The performance of organic thin film transistors (OTFTs) is heavily dependent on the interface property between the organic semiconductor and the dielectric substrate. Device fabrication with bottom-gate architecture by depositing the semiconductors with a solution method is highly recommended for cost-effectiveness. Surface modification of the dielectric layer is employed as an effective approach to control film growth. Here, we perform surface modification via a self-assembled monolayer of silanes, a spin-coated polymer layer or UV-ozone cleaning, to prepare surfaces with different surface polarities and morphologies. The semiconductor is inkjet-printed on the surface-treated substrates as single-line films with overlapping drop assignment. Surface morphologies of the dielectric before film deposition and film morphologies of the inkjet-printed semiconductor are characterized with polarized microscopy and AFM. Electrical properties of the films are studied through organic thin-film transistors with bottom-gate/bottom-contact structure. With reduced surface polarity and nanoscale aggregation of silane molecules on the substrates, semiconductor nucleates from the interior interface between the ink solution and the substrate, which contributes to film growth with higher crystal coverage and better film quality at the interface. Surface treatment with hydrophobic silanes is a promising approach to fabrication of high performance OTFTs with nonpolar conjugated molecules via solution methods.

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High-mobility pentacene thin-film phototransistor with poly-4-vinylphenol gate dielectric

Cited by 32 publications

References 24 publications

Organic transistors and phototransistors based on small molecules

Organic transistors and phototransistors based on small molecules

The Electrical Properties of Fabricated Pentacene Based Phototransistor with Polystyrene Gate Insulator

Interfacial nucleation behavior of inkjet-printed 6,13 bis(tri-isopropylsilylethynyl) pentacene on dielectric surfaces

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