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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: In this paper, the authors showed that the electrical properties of triisopropylsilyl (TIPS) pentacene organic thin-film transistors (OTFTs) were significantly influenced by the solvent used for spin-coating.
Abstract: The thin-film morphology, degree of crystallinity, as well as the electrical properties of triisopropylsilyl (TIPS) pentacene organic thin-film transistors (OTFTs) were significantly influenced by the solvent used for spin-coating a TIPS pentacene layer. The TIPS pentacene films spin-coated from solvents having high boiling points (chlorobenzene and xylene) showed dendritelike morphology and a higher degree of crystallinity, while TIPS pentacene spin-coated from solvent having a low boiling point (chloroform) showed amorphous-like morphology and a lower degree of crystallinity. The field-effect mobility of OTFTs fabricated from chlorobenzene was 4 x 10 -2 cm 2 /V s, whereas mobility of 10 -4 to 10 -5 cm 2 /V s was achieved when using chloroform. This implies that the morphology, crystallinity, as well as the electrical properties of TIPS pentacene have a strong dependence on the solvent used for spin-coating.

59 citations

Journal ArticleDOI
TL;DR: In this article, the authors applied the transmission-line method to a few monolayers thick pentacene films in thin film transistor geometry, and found that tetrafluorotetracyanoquinodimethane (F4TCNQ) doping reduced the contact resistance by more than a factor of 20.
Abstract: The authors study the contact resistance of gold-pentacene interface by applying the transmission-line method to a few monolayers thick pentacene films in thin film transistor geometry. It was found that tetrafluorotetracyanoquinodimethane (F4TCNQ) doping reduces the contact resistance by more than a factor of 20. In addition, a significant improvement of the conductance of pentacene nanocrystals self-assembled on 10nm gap Au nanojunction devices by F4TCNQ doping is observed. The result demonstrates the importance of doping on the performance of organic electronic devices from 10nm scale up to 100μm scale.

59 citations

Journal ArticleDOI
TL;DR: In this article, pyrochlore structured thin films can provide the requisite high dielectric constant coupled with excellent leakage current characteristics, while remaining compatible with the processing requirements of flexible OTFTs.
Abstract: Pentacene organic thin-film transistors (OTFTs) have demonstrated the highest performance among TFTs with an organic semiconductor channel. High operating voltages (20-100 V), stemming from poor capacitive coupling between gate electrode and channel, are a major limitation, particularly for portable battery-powered device applications. OTFTs fabricated on flexible polymer substrates, often characterized by rough surfaces, benefit from the use of high-K dielectrics given the ability to accommodate thicker films which ensure the pinhole-free and good coverage without need to increase operating voltage. As we demonstrate, pyrochlore structured thin films can provide the requisite high dielectric constant coupled with excellent leakage current characteristics, while remaining compatible with the processing requirements of flexible OTFTs. The introduction of an extremely thin parylene film between the BZN dielectric and the pentacene semiconductor markedly shifts the threshold voltage, making it possible to fabricate both enhancement (E) and depletion (D) TFTs. We report the successful fabrication of low-voltage (<2 V) organic transistors and depletion-load inverter using a 200-nm-thick pyrochlore gate dielectric, Bi/sub 1.5/Zn/sub 1.0/Nb/sub 1.5/O/sub 7/ (BZN), prepared by a room temperature process. The inverters with depletion load were successfully operated under 5 V with excellent noise margin.

59 citations

Journal ArticleDOI
TL;DR: In this paper, a vacuum deposited molecular organic photodetector (OPD) integrated with a pentacene-based organic thin film transistor (OTFT) for use as a switchable organic passive pixel sensor in focal plane imaging arrays.

59 citations

Journal ArticleDOI
TL;DR: A soluble 2,3,9,10-tetrakis(trimethylsilyl)pentacene was synthesized and the discovery of the radical cationic character of in solution through EPR measurement has provided insights into the sensitivity of acenes towards light and oxygen.

59 citations


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