Search Results - "Sunahara, Kenji"

Interfacial Electron-Transfer Kinetics in Metal-Free Organic Dye-Sensitized Solar Cells: Combined Effects of Molecular Structure of Dyes and Electrolytes by Miyashita, Masanori, Sunahara, Kenji, Nishikawa, Tomohiro, Uemura, Yu, Koumura, Nagatoshi, Hara, Kohjiro, Mori, Atsunori, Abe, Takao, Suzuki, Eiji, Mori, Shogo

“…Electron diffusion coefficient, lifetime, and density in the TiO2 electrode of dye-sensitized TiO2 solar cells (DSCs) employing I−/I3 − redox couples were…”
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Enhancing the performance of quantum dots sensitized solar cell by SiO2 surface coating by Liu, Zhifu, Miyauchi, Masahiro, Uemura, Yu, Cui, Yan, Hara, Kohjiro, Zhao, Zhigang, Sunahara, Kenji, Furube, Akihiro

“…This letter reports enhanced performance of quantum dots sensitized solar cells by selectively deposition an insulating SiO2 layer over the quantum dots (QDs)…”
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Photodegradation in Encapsulated Silole-Based Polymer: PCBM Solar Cells Investigated using Transient Absorption Spectroscopy and Charge Extraction Measurements by Clarke, Tracey M., Lungenschmied, Christoph, Peet, Jeff, Drolet, Nicolas, Sunahara, Kenji, Furube, Akihiro, Mozer, Attila J.

“…Light induced degradation has been observed in the performance of organic solar cells in the absence of oxygen and a detailed analysis of the effect of this…”
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A method to measure electron lifetime in dye-sensitized solar cells: Stepped current induced measurement of cell voltage in the dark by Sunahara, Kenji, Ogawa, Junichi, Mori, Shogo

“…The lifetime of electrons in the semiconductor electrode of dye-sensitized solar cells (DSSCs) is an important parameter determining the energy conversion…”
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Coexistence of Femtosecond- and Nonelectron-Injecting Dyes in Dye-Sensitized Solar Cells: Inhomogeniety Limits the Efficiency by Sunahara, Kenji, Furube, Akihiro, Katoh, Ryuzi, Mori, Shogo, Griffith, Matthew J, Wallace, Gordon G, Wagner, Pawel, Officer, David L, Mozer, Attila J

“…We performed a detailed and quantitative spectroscopic study of the electron injection dynamics for porphyrin as one of organic dyes at an adequate level to…”
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Femtosecond Diffuse Reflectance Transient Absorption for Dye-Sensitized Solar Cells under Operational Conditions: Effect of Electrolyte on Electron Injection by Furube, Akihiro, Wang, Zhong-Sheng, Sunahara, Kenji, Hara, Kohjiro, Katoh, Ryuzi, Tachiya, Masanori

“…By applying diffuse reflectance transient absorption spectroscopy to dye-sensitized solar cells under operational conditions, we were able to directly…”
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Alternation of Charge Injection and Recombination in Dye-Sensitized Solar Cells by the Addition of Nonconjugated Bridge to Organic Dyes by Zhang, Xue-Hua, Ogawa, Junichi, Sunahara, Kenji, Cui, Yan, Uemura, Yu, Miyasaka, Tsutomu, Furube, Akihiro, Koumura, Nagatoshi, Hara, Kohjiro, Mori, Shogo

“…Most metal-free organic dyes for dye-sensitized solar cells are designed by following a donor conjugated-bridge acceptor structure with a carboxyl acid as an…”
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Cation Exchange at Semiconducting Oxide Surfaces: Origin of Light-Induced Performance Increases in Porphyrin Dye-Sensitized Solar Cells by Griffith, Matthew J, Sunahara, Kenji, Furube, Akihiro, Mozer, Attila J, Officer, David L, Wagner, Pawel, Wallace, Gordon G, Mori, Shogo

“…The origin of simultaneous improvements in the short-circuit current density (J sc) and open-circuit voltage (V oc) of porphyrin dye-sensitized TiO2 solar…”
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A Nonconjugated Bridge in Dimer-Sensitized Solar Cells Retards Charge Recombination without Decreasing Charge Injection Efficiency by Sunahara, Kenji, Griffith, Matthew J, Uchiyama, Takayuki, Wagner, Pawel, Officer, David L, Wallace, Gordon G, Mozer, Attila J, Mori, Shogo

“…Dye sensitized solar cells (DSSCs) employing a dimer porphyrin, which was synthesised with two porphyrin units connected without conjugation, have shown that…”
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Electron Transport and Recombination in Dye-Sensitized TiO2 Solar Cells Fabricated without Sintering Process by Mori, Shogo, Sunahara, Kenji, Fukai, Yosuke, Kanzaki, Taisuke, Wada, Yuji, Yanagida, Shozo

“…Nanoporous TiO2 electrodes were prepared from a colloidal suspension of TiO2 nanoparticles with heating processes at 80 °C for 12 h (regarded as nonsintering…”
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Enhancing the performance of quantum dots sensitized solar cell by SiO 2 surface coating by Liu, Zhifu, Miyauchi, Masahiro, Uemura, Yu, Cui, Yan, Hara, Kohjiro, Zhao, Zhigang, Sunahara, Kenji, Furube, Akihiro

“…This letter reports enhanced performance of quantum dots sensitized solar cells by selectively deposition an insulating SiO 2 layer over the quantum dots (QDs)…”
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Zn−Zn Porphyrin Dimer-Sensitized Solar Cells: Toward 3-D Light Harvesting by Mozer, Attila J, Griffith, Matthew J, Tsekouras, George, Wagner, Pawel, Wallace, Gordon G, Mori, Shogo, Sunahara, Kenji, Miyashita, Masanori, Earles, John C, Gordon, Keith C, Du, Luchao, Katoh, Ryuzi, Furube, Akihiro, Officer, David L

“…Zn−Zn porphyrin dimers have been incorporated into thin dye-sensitized solar cells (DSSCs) to boost their light harvesting efficiency. The photoexcited dimers…”
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Driving Force Dependence of Electron Transfer Kinetics and Yield in Low-Band-Gap Polymer Donor–Acceptor Organic Photovoltaic Blends by Wright, Brendan F, Sunahara, Kenji, Furube, Akihiro, Nattestad, Andrew, Clarke, Tracey M, Bazan, Guillermo C, Azoulay, Jason D, Mozer, Attila J

“…The rate of photoinduced electron transfer (PET) (κPET), quantum yield of PET (QYPET), and charge extraction yield (EQE) are determined for a series of…”
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Preliminary Measurements of Electrical Micropitting in Grease-Lubricated Point Contacts by Sunahara, Kenji, Ishida, Yuji, Yamashita, Shinji, Yamamoto, Masaharu, Nishikawa, Hiroshi, Matsuda, Kenji, Kaneta, Motohiro

“…The dielectric breakdown characteristics of three types of grease used in motors are compared by direct observations of flashes caused by the electric…”
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Development of Grease Film Breakdown Observing Device by Kenji Sunahara, Shinji Yamashita, Masaharu Yamamoto, Michiaki Ikeda, Hiroshi Nishikawa, Kenji Matsuda, Motohiro Kaneta

“…The paper describes a newly developed smart device, which can detect the dielectric breakdown of the grease elastohydrodynamic film formed between a steel ball…”
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Electron Transport and Recombination in Dye-Sensitized TiO 2 Solar Cells Fabricated without Sintering Process by Mori, Shogo, Sunahara, Kenji, Fukai, Yosuke, Kanzaki, Taisuke, Wada, Yuji, Yanagida, Shozo

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The origin of open circuit voltage of porphyrin-sensitised TiO(2) solar cells by Mozer, Attila J, Wagner, Pawel, Officer, David L, Wallace, Gordon G, Campbell, Wayne M, Miyashita, Masanori, Sunahara, Kenji, Mori, Shogo

“…Electron lifetime and diffusion coefficient measurements in highly efficient porphyrin-sensitised TiO(2) solar cells showed reduced electron lifetime, and…”
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