Výsledky vyhledávání - "Tokiyoshi Umeda"

Mass Production Technology of Flexible AMOLED Displays and Improvement of the OLED Device Characteristics

Autor: Shinichi Kawato, Yuto Tsukamoto, Naoki Uetake, Masanobu Mizusaki, Tokiyoshi Umeda, Masakazu Shibasaki, Shinji Shimada

Publikováno v: 2019 26th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD).

We have developed low power consumption 6.18″ WQHD+ flexible AMOLED display with highly efficient top-emission type Blue OLED and successfully launched its mass production. For the next step, we develop more reliable flexible AMOLED display compose

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4dbacd6ac79e282c9ce810489c1a247
https://doi.org/10.23919/am-fpd.2019.8830624

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High-mobility bottom-contact thin-film transistor based on anthracene oligomer

Autor: Shizuo Tokito, Toshiyasu Suzuki, Daisuke Kumaki, Tokiyoshi Umeda

Publikováno v: Organic Electronics. 9:921-924

The mobility in top- and bottom-contact thin-film transistors (TFTs) based on 2,2-bianthryl (2A) was improved. The mobility of the top-contact 2A-TFT was improved from 0.25 to 1.0 cm2/Vs by octyltrichlorosilane (OTS) treatment of the SiO2 gate-insula

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::70f71a61cf04939fa11e20618bb1d1a0
https://doi.org/10.1016/j.orgel.2008.06.012

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High air stability of threshold voltage on gate bias stress in pentacene TFTs with a hydroxyl-free and amorphous fluoropolymer as gate insulators

Autor: Tokiyoshi Umeda, Daisuke Kumaki, Shizuo Tokito

Publikováno v: Organic Electronics. 9:545-549

We investigated the air stabilities of threshold voltages ( V th ) on gate bias stress in pentacene thin-film transistors (TFTs) with a hydroxyl-free and amorphous fluoropolymer as gate insulators. The 40-nm-thick thin films of spin-coated fluoropoly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d32a27b93d8a370e7a6e5eb895fd4a0a
https://doi.org/10.1016/j.orgel.2008.02.015

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Surface and interface morphology observation and photovoltaic properties of C60/conducting polymer interpenetrating heterojunction devices

Autor: Takeshi Shibata, Hiroyoshi Mizukami, Hideki Noda, Akihiko Fujii, Tokiyoshi Umeda, Masanori Ozaki

Publikováno v: Journal of Physics D: Applied Physics. 39:1521-1524

Optical and photovoltaic (PV) properties of PV cells with the structure indium tin oxide (ITO)/C60/conducting polymer (CP)/Au have been investigated. The C60/CP heterojunctions in the PV cells were fabricated by spin-coating an organic solution of CP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::234a3cfccddfe96befd6489f48d70af6
https://doi.org/10.1088/0022-3727/39/8/011

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Improvement of Sensitivity in Long-Wavelength Range in Organic Thin-Film Solar Cell with Interpenetrating Semilayered Structure

Autor: Akihiko Fujii, Hideki Noda, Katsumi Yoshino, Masanori Ozaki, Hiroyoshi Mizukami, Yuuki Hashimoto, Tokiyoshi Umeda

Publikováno v: Japanese Journal of Applied Physics. 45:538-541

Photovoltaic cells with interpenetrating interfaces between codeposited layers of small-molecular-weight materials and conducting polymer layers fabricated by the solvent corrosion method have been investigated. In order to improve photosensitivity i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97340508d343b076587e3891d2663854
https://doi.org/10.1143/jjap.45.538

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