http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Nanostructures and electronic properties of carbon and boron nitride nanocapsules
Takeo Oku,Hidehiko Kitahara 한양대학교 세라믹연구소 2004 Journal of Ceramic Processing Research Vol.5 No.1
Carbon (C) nanocapsules with gold nanoparticles and boron nitride (BN) nanocapsules with cobalt nanoparticles were fabricated, and their electronic properties were investigated by scanning tunneling microscopy at room temperature. The current-voltage characteristics of the BN nanocapsules showed Coulomb staircase-like behavior, and the photoluminescence spectrum of BN nanocapsules showed a peak at 3.8 eV. It is believed that the BN layers would act as tunnel barriers and that double-barrier tunnel junctions would be formed.
Formation and characterization of MEH-PPV/PCBM-based bulk heterojunction solar cells
Takeo Oku,Syuichi Nagaoka,Atsushi Suzuki,Kenji Kikuchi,Yasuhiko Hayashi,Hayato Sakuragi,Tetsuo Soga 한양대학교 세라믹연구소 2008 Journal of Ceramic Processing Research Vol.9 No.6
Polymer/fullerene bulk heterojunction solar cells with poly[2-methoxy-5-(20-ethylhexoxy)-1,4-phenylenevinylene] (MEH-PPV), zinc-phthalocyanine (ZnPc) and 6,6-phenyl C61-butyric acid methyl ester (PCBM), were produced and characterized. A device based on MEH-PPV and PCBM provided better efficiency, fill factor and short-circuit current compared to those of a device on MEH-PPV(ZnPc) and PCBM. The solar cells with a MEH-PPV and PCBM structure showed a higher photoresponse in the range of 300 to 60 nm. The energy levels of the molecules were calculated and are discussed. Polymer/fullerene bulk heterojunction solar cells with poly[2-methoxy-5-(20-ethylhexoxy)-1,4-phenylenevinylene] (MEH-PPV), zinc-phthalocyanine (ZnPc) and 6,6-phenyl C61-butyric acid methyl ester (PCBM), were produced and characterized. A device based on MEH-PPV and PCBM provided better efficiency, fill factor and short-circuit current compared to those of a device on MEH-PPV(ZnPc) and PCBM. The solar cells with a MEH-PPV and PCBM structure showed a higher photoresponse in the range of 300 to 60 nm. The energy levels of the molecules were calculated and are discussed.
Yamanouchi, Jun,Oku, Takeo,Ohishi, Yuya,Fukaya, Misaki,Ueoka, Naoki,Tanaka, Hiroki,Suzuki, Atsushi Techno-Press 2018 Advances in materials research Vol.7 No.1
$TiO_2/CH_3NH_3Pb_{1-x}Sb_xI_{3-3x}Br_{3x}-based$ photovoltaic devices were fabricated by a spin-coating method using mixture solutions with $SbBr_3$. Effects of $SbBr3$, CsI or RbBr addition to $CH_3NH_3PbI_3$ precursor solutions on the photovoltaic properties where investigated. The short-circuit current densities and photoconversion efficiencies were improved by adding a small amount of $SbBr_3$, CsI or RbBr to the perovskite phase, which would be due to the doping effect of Sb, Br and Cs/Rb atom at the Pb, I and $CH_3NH3$ sites, respectively.
Effect of an amorphous TiO₂addition on dye-sensitized solar cells with organic dyes
Nariaki Kakuta,Takeo Oku,Atsushi Suzuki,Kenji Kikuchi,Shiomi Kikuchi 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.1
Dye-sensitized solar cells with organic dyes of xylenol orange and rose bengal were fabricated and characterized. A solar cell with mixed xylenol orange and rose bengal showed a higher conversion efficiency compared to solar cells with one type of dye. In addition, amorphous TiO2 layers were introduced to attract electrons, which were mixed phases of anatase and amorphous. The current density was improved by the TiO2 layer introduced, and the conversion efficiency increased. Dye-sensitized solar cells with organic dyes of xylenol orange and rose bengal were fabricated and characterized. A solar cell with mixed xylenol orange and rose bengal showed a higher conversion efficiency compared to solar cells with one type of dye. In addition, amorphous TiO2 layers were introduced to attract electrons, which were mixed phases of anatase and amorphous. The current density was improved by the TiO2 layer introduced, and the conversion efficiency increased.
Atsushi Suzuki,Kaede Kitagawa,Takeo Oku,Masanobu Okita,Sakiko Fukunishi,Tomoharu Tachikawa 대한금속·재료학회 2022 ELECTRONIC MATERIALS LETTERS Vol.18 No.2
Fabrication and characterization of methylammonium lead iodide perovskite solar cells incorporated with formamidinium iodide, copper halides, alkali metal halides and decaphenylcyclopentasilane were performed. Addition of CuCl and KI at 2% into the perovskite layer off ered compact morphologies and crystal orientation in the perovskite layer, improving short circuit current densities, series resistance and open-circuit voltages related to conversion efficiencies. The stabilities of conversion efficiencies were improved for the perovskite layer incorporated with 2% CuCl and 2% NaI. The stabilities depended on the state of the surface morphologies and crystal orientation while suppressing decomposition reaction in the perovskite layer. The photovoltaic mechanisms were associated with promotion of carrier generation and diffusion in the crystalline layer. The electronic correlation was based on the charge transfer between 5p orbital of I ion and 3d orbital of Cu ion near valence band, promoting the carrier generation and diffusion related to the short circuit current densities.