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Pentacene

About: Pentacene is a research topic. Over the lifetime, 5051 publications have been published within this topic receiving 161481 citations. The topic is also known as: 2,3:6,7-dibenzanthracene & benzo[b]naphthacene.


Papers
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Journal ArticleDOI
TL;DR: Pentacene organic thin-film transistors (OTFTs) with a high-kappa HfLaO dielectric were integrated onto flexible polyimide substrates as discussed by the authors.
Abstract: Pentacene organic thin-film transistors (OTFTs) with a high-kappa HfLaO dielectric were integrated onto flexible polyimide substrates. The pentacene OTFTs exhibited good performance, such as a low subthreshold swing of 0.13 V/decade and a threshold voltage of -1.25 V. The field-effect mobility was 0.13 cm2/Vmiddots at an operating voltage as low as only 2.5 V. These characteristics are attractive for high-switching-speed and low-power applications.

229 citations

Journal ArticleDOI
TL;DR: In this article, a crystalline, dense octadecylsilane (OTS) surface modification layer was found that promotes two-dimensional semiconductor growth, and higher mobility was consistently achieved for films deposited on crystalline OTS compared to disordered OTS, with mobilities as high as 5.3 and 2.3cm 2 V � 1 s � 1 for C60 and pentacene, respectively.
Abstract: In organic thin film transistors (OTFTs), charge transport occurs in the first few monolayers of the semiconductor near the semiconductor/dielectric interface. Previous work has investigated the roles of dielectric surface energy, roughness, and chemical functionality on performance. However, large discrepancies in performance, even with apparently identical surface treatments,indicate that additionalsurface parametersmust beidentified and controlled in order to optimize OTFTs. Here, a crystalline, dense octadecylsilane (OTS) surface modification layer is found that promotes twodimensional semiconductor growth. Higher mobility is consistently achieved for films deposited on crystalline OTS compared to on disordered OTS, with mobilities as high as 5.3 and 2.3cm 2 V � 1 s � 1 for C60 and pentacene, respectively. This is a significant step toward morphological control of organic semiconductors which is directly linked to their thin film charge carrier transport.

228 citations

Journal ArticleDOI
TL;DR: The results demonstrate the central role of crystallinity and purity in photogeneration processes and will constrain the design of future photovoltaic devices.
Abstract: We present a comparative study of ultrafast photoconversion dynamics in tetracene (Tc) and pentacene (Pc) single crystals and Pc films using optical pump-probe spectroscopy. Photoinduced absorption in Tc and Pc crystals is activated and temperature-independent, respectively, demonstrating dominant singlettriplet exciton fission. In Pc films (as well as C60-doped films) this decay channel is suppressed by electron trapping. These results demonstrate the central role of crystallinity and purity in photogeneration processes and will constrain the design of future photovoltaic devices.

227 citations

Journal ArticleDOI
TL;DR: The first reported dynamic results for organic circuits fabricated on polyester substrates were reported in this paper, where the high-performance pentacene transistors yield circuits with the highest reported clock frequencies.
Abstract: We have fabricated and characterized analog and digital circuits using organic thin-film transistors on polyester film substrates. These are the first reported dynamic results for organic circuits fabricated on polyester substrates. The high-performance pentacene transistors yield circuits with the highest reported clock frequencies for organic circuits.

227 citations

Journal ArticleDOI
TL;DR: In this article, the authors report on the fabrication and characterization of field effect transistors (FETs) on single-crystal pentacene and show that these FETs exhibit hole conductivity with room-temperature effective mobility (μeff) up to 0.30 cm2/V.
Abstract: We report on the fabrication and characterization of field-effect transistors (FETs) on single-crystal pentacene. These FETs exhibit hole conductivity with room-temperature effective mobility (μeff) up to 0.30 cm2/V s and on/off ratios up to 5×106. A negative gate voltage of −50 V significantly decreases the activation energy (Ea) down to 0.143 eV near room temperature. Using this value of Ea and a simple model, we find the number of free carriers is only ∼0.4% of the total number of injected carriers. Along with μeff∼0.3 cm2/V s, this places the intrinsic mobility in the range of tens of cm2/V s.

226 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202382
2022176
2021111
2020125
2019151
2018159