Solution coating of large-area organic semiconductor thin films with aligned single-crystalline domains

We report on sub-picosecond charge photogeneration and band-like charge transport in a variety of organic molecular crystals (pentacene, functionalized pentacene, tetracene and rubrene) and thin films (pentacene and functionalized pentacene) using time-resolved terahertz pulse spectroscopy.

Pentacene

Tetracene

Organic semiconductor

Rubrene

Charge carrier

Picosecond

10.1364/otst.2005.tub7

Cite

Citations (0)

Interplay between molecular packing and charge transfer states in 6,13-bis(trisopropylsilylethynyl)-pentacene (TIPS-pentacene) organic semiconductor thin films

APS (2019)

Yang Li Jing Wan Detlef‐M. Smilgies John Hughes Randall L. Headrick

Pentacene

Organic semiconductor

Source

Cite

Citations (0)

Direct Observation and Measurement of Mobile Charge Carriers in a Monolayer Organic Semiconductor on a Dielectric Substrate

ACS Nano (2011)

Yeping Jiang Qiong Qi Rui Wang Jun Zhang Qi-Kun Xue

We report the electrical characterization of a single layer of an organic semiconductor grown on a dielectric surface. The dynamic response of the charge carriers in the monolayer film of pentacene was characterized through the electrostatic interactions between an electric force microscope (EFM) probe and pentacene islands of various sizes. These islands were formed in situ by segmenting a coalesced pentacene monolayer into separated regions. The size-dependent dielectric responses of the pentacene islands suggest that mobile charges exist in the organic monolayer. Local capacitance spectroscopy revealed that the charge carriers in the p-type pentacene monolayer could be depleted at high bias voltages, enabling a further determination of the charge-carrier concentration in the organic semiconductor ultrathin film.

Pentacene

Organic semiconductor

Charge carrier

Organic field-effect transistor

10.1021/nn200760r

Cite

Citations (26)

Molecular dynamics simulations of graphoepitaxy of organic semiconductors, sexithiophene, and pentacene: Molecular-scale mechanisms of organic graphoepitaxy

Japanese Journal of Applied Physics (2018)

Susumu Ikeda

Abstract Molecular dynamics (MD) simulations of the organic semiconductors α-sexithiophene (6T) and pentacene were carried out to clarify the mechanism of organic graphoepitaxy at the molecular level. First, the models of the grooved substrates were made and the surfaces of the inside of the grooves were modified with –OH or –OSi(CH 3 ) 3 , making the surfaces hydrophilic or hydrophobic. By the MD simulations of 6T, it was found that three stable azimuthal directions exist (0, ∼45, and 90°; the angle that the c -axis makes with the groove), being consistent with experimental results. MD simulations of deposition processes of 6T and pentacene were also carried out, and pentacene molecules showed the spontaneous formation of herringbone packing during deposition. Some pentacene molecules stood on the surface and formed a cluster whose a -axis was parallel to the groove. It is expected that a deep understanding of the molecular-scale mechanisms will lead graphoepitaxy to practical applications, improving the performance of organic devices.

Pentacene

Organic semiconductor

Groove (engineering)

Deposition

10.7567/jjap.57.03eg04

Cite

Citations (6)

Direct observation of Frenkel and charge transfer excitons in single crystal organic semiconductor of pentacene

Bulletin of the American Physical Society (2010)

Dongchen Qi Andrew T. S. Wee Andrivo Rusydi Haiyan Su M. Bastjan

Pentacene

Organic semiconductor

Crystal (programming language)

Source

Cite

Citations (0)

Spin transport studies in high mobility organic semiconductor, Pentacene (C$_{22}$H$_{14}$)

Bulletin of the American Physical Society (2008)

J. H. Shim V. Karthik J.S. Moodera

Pentacene

Organic semiconductor

Source

Cite

Citations (0)

Ultrafast Photoconductivity in Organic Semiconductors

Frontiers in Optics (2005)

Oksana Ostroverkhova David G. Cooke Svitlana Shcherbyna R.F. Egerton Frank A. Hegmann

Pentacene

Tetracene

Rubrene

Organic semiconductor

Photoconductivity

Picosecond

Charge carrier

10.1364/fio.2005.stud5

Cite

Citations (0)

Low-Voltage Organic Thin-Film Transistors with Improved Stability and Large Transconductance

Conference digest (2007)

Hagen Klauk Ute Zschieschang R. Thomas Weitz Hong Meng Fangping Sun

Pentacene is among the most popular organic semiconductors for organic thin-film transistors (TFTs), due to its relatively large carrier mobility. However, the stability of pentacene TFTs under continuous dynamic operation may be insufficient for future applications. Here we compare the static and dynamic performance and the operational stability of low-voltage organic TFTs based on pentacene and a recently synthesized organic semiconductor, di(phenylvinyl)anthracene (DPVAnt).

Pentacene

Organic semiconductor

Transconductance

Electron Mobility

10.1109/drc.2007.4373654

Cite

Citations (0)

First Principle Calculations of the Structure and Electronic Properties of Pentacene Based Organic and ZnO Based Inorganic Semiconducting Materials

Yun Li

In this thesis, I utilize first principles density functional theory (DFT) based calculations to investigate the structure and electronic properties including charge transfer behaviors and work function of two types of materials: pentacene based organic semiconductors and ZnO transparent conducting oxides, with an aim to search for high mobility n-type organic semiconductors and fine tuning work functions of ZnO through surface modifications. Based on DFT calculations of numerous structure combinations, I proposed a pentacene and perfluoro-pentacene alternating hybrid structures as a new type of n-type semiconductor. Based on the DFT calculations and Marcus charge transfer theory analysis, the new structure has high charge mobility and can be a promising new n-type organic semiconductor material. DFT calculations have been used to systematically investigate the effect of surface organic absorbate and surface defects on the work function of ZnO. It was found that increasing surface coverage of organic groups and decreasing surface defects lead to decrease of work functions, in excellent agreement with experimental results. First principles based calculations thus can greatly contribute to the investigating and designing of new electronic materials.

Pentacene

Organic semiconductor

Electron Mobility

Source

Cite

Citations (0)