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Paper Abstract and Keywords
Presentation 2007-10-26 15:30
Alkyl-Functionalized Organic Dyes for Efficient Molecular Photovoltaics
Nagatoshi Koumura, Kohjiro Hara, Zhong-Sheng Wang (AIST) OME2007-46
Abstract (in Japanese) (See Japanese page) 
(in English) A dye-sensitized solar cell (DSSC) is one of the efficient electronic devices, by which photonic energy is transformed into electronic energy. Such an electronic device is constructed by several materials, in which a dye is an important factor for the improvement of this system. Recently, several efficient organic dyes have been designed and synthesized for the solar cell system, such as coumarin dyes and merocyanine dyes, while ruthenium complexes have been often used. We have developed a series of carbazole dyes which have a carbazole moiety as a donor, an oligothiophene part and cyanoacetic acid adsorption. Among them, the photovoltaic efficiency as 8.3 % (Jsc = 15.2 mAcm–2, Voc = 0.73 V, FF = 0.75, AM1.5G with an aperture mask) was achieved by using a DSSC based on MK-2 dye. It is noteworthy that the relatively high open-circuit voltage was obtained among organic dyes due to the improvement of the electron lifetime of injected electrons in the TiO2 electrode. Here we will discuss of the detail that the structure of organic dyes can be affected to the photovoltaic performance of DSSCs.
Keyword (in Japanese) (See Japanese page) 
(in English) Dye-Sensitized Solar Cells / Organic Dyes / Carbazole / Oligothiophenes / Photovoltaic Performances / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 292, OME2007-46, pp. 19-24, Oct. 2007.
Paper # OME2007-46 
Date of Issue 2007-10-19 (OME) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF OME2007-46

Conference Information
Committee OME  
Conference Date 2007-10-26 - 2007-10-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OME 
Conference Code 2007-10-OME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Alkyl-Functionalized Organic Dyes for Efficient Molecular Photovoltaics 
Sub Title (in English)  
Keyword(1) Dye-Sensitized Solar Cells  
Keyword(2) Organic Dyes  
Keyword(3) Carbazole  
Keyword(4) Oligothiophenes  
Keyword(5) Photovoltaic Performances  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Nagatoshi Koumura  
1st Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
2nd Author's Name Kohjiro Hara  
2nd Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
3rd Author's Name Zhong-Sheng Wang  
3rd Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
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Speaker Author-1 
Date Time 2007-10-26 15:30:00 
Presentation Time 30 minutes 
Registration for OME 
Paper # OME2007-46 
Volume (vol) vol.107 
Number (no) no.292 
Page pp.19-24 
#Pages 6 
Date of Issue 2007-10-19 (OME) 

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