Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Akira Shinpo"'
Publikováno v:
The Journal of Physical Chemistry C. 112:17011-17017
A series of coumarin dyes (NKX-2593, NKX-2807, and NKX-2883) with one or two -CN groups as electron acceptors were synthesized and applied as dye sensitizers for dye-sensitized solar cells. Compared with the dye containing one -CN group, linking one
Publikováno v:
The Journal of Physical Chemistry C. 111:7224-7230
This paper reports a new coumarin dye, 2-cyano-3-(5-{2-[5-(1,1,6,6-tetramethyl-10-oxo-2,3,5,6-tetrahydro-1H,4H,10H-11-oxa-3a-aza-benzo[de]anthracen -9-yl)-thiophen-2-yl]-vinyl}-thiophen-2-yl)-acrylic acid (NKX-2700), and its application in dye-sensit
Publikováno v:
Advanced Materials. 19:1138-1141
Dye-sensitized solar cells (DSSCs) have been studied extensively as potential alternatives to conventional inorganic solid solar cells, by using wide-bandgap nanocrystalline TiO2 sensitized with ruthenium polypyridine complexes or metal-free organic
Autor:
Sadaharu Suga, Toshitada Yoshihara, Hironori Arakawa, and Akira Shinpo, Ryuzi Katoh, Akihiro Furube, Miki Murai, S. Ito, Tadatake Sato, Mitsuhiko Kurashige, Kohjiro Hara
Publikováno v:
Advanced Functional Materials. 15:246-252
Novel conjugated organic dyes that have N,N-dimethylaniline (DMA) moieties as the electron donor and a cyanoacetic acid (CAA) moiety as the electron acceptor were developed for use in dye-sensitized nanocrystalline-TiO2 solar cells (DSSCs). We attain
Autor:
Hideki Sugihara, Yasuhiro Tachibana, Yasuyo Ohga, Sadaharu Suga, Akira Shinpo, Kazuhiro Sayama, Hironori Arakawa, Kohjiro Hara
Publikováno v:
Solar Energy Materials and Solar Cells. 77:89-103
We have developed dye-sensitized nanocrystalline TiO2 solar cells (DSSCs) based on novel coumarin-dye photosensitizers. The absorption spectra of these novel dyes are red-shifted remarkably in the visible region relative to the spectrum of C343, a co
Autor:
Kohjiro Hara, Yasufumi Dan-oh, Tadatake Sato, Hideki Sugihara, and Akira Shinpo, Chiaki Kasada, Akihiro Furube, Ryuzi Katoh, Sadaharu Suga, Zhong-Sheng Wang
Publikováno v:
The journal of physical chemistry. B. 109(32)
We have developed oligothiophene-containing coumarin dyes fully functionalized for dye-sensitized nanocrystalline TiO(2) solar cells (DSSCs). DSSCs based on the dyes gave good performance in terms of incident photon-to-current conversion efficiency (
Autor:
Chiaki Kasada, Hironori Arakawa, Zhong-Sheng Wang, Kohjiro Hara, Akira Shinpo, Yasufumi Dan-oh, Hideki Sugihara, Sadaharu Suga
Publikováno v:
The journal of physical chemistry. B. 109(9)
A new coumarin dye, cyano-{5,5-dimethyl-3-[2-(1,1,6,6-tetramethyl-10-oxo-2,3,5,6-tetrahydro-1H,4H,10H-11-oxa-3a-aza-benzo[de]anthracen-9-yl)vinyl]cyclohex-2-enylidene}-acetic acid (NKX-2753), was prepared and characterized with respect to photophysic
Autor:
Yasufumi Dan-oh, Kazuhiro Sayama, Sadaharu Suga, Akira Shinpo, Kohjiro Hara, Chiaki Kasada, Hironori Arakawa, Yasuyo Ohga
Publikováno v:
Langmuir : the ACS journal of surfaces and colloids. 20(10)
The effects of deoxycholic acid (DCA) and 4-tert-butylpyridine (TBP) as additives on the photovoltaic performance of coumarin-dye-sensitized nanocrystalline TiO2 solar cells were investigated. DCA coadsorption improved both the photocurrent and photo
Publikováno v:
NIPPON KAGAKU KAISHI. :1138-1140
Degradation mechanism of 1, 2-bis(2, 4, 5-trimethyl-3 -thienyl)-1, 2-dicyanoethene (TECN)was studied by product analysis. When TECN was irradiated in dichloromethane with 420nm light, the closed-ring isomer with absorption maximum at 520 nm was the s