NDLI: Broad absorption natural dye (Mondo-Grass berry) for dye sensitized solar cell

Content Provider	Springer Nature Link
Author	DeSilva, L. Ajith Pitigala, P. K. D. D. P. Gaquere Parker, A. Landry, Ryan Hasbun, J. E. Martin, Victoria Bandara, T. M. W. J. Perera, A. G. U.
Copyright Year	2017
Abstract	Two major drawbacks in dye-sensitized solar cells (DSSC) are the narrow spectral response and the short-term stability. Research on development of artificial dyes for a broad frequency response is a major field of research today. The work presented here shows a broad response with a natural dye extracted from a Mondo-grass (Ophiopogon japonicus) berry. Its range of sensitivity covers the entire visible region and its tail expands to the near infrared. This is a unique situation since many natural dyes containing anthocyanin or carotenoids strongly absorbed only below 600 nm. A TiO$_{2}$ based electrode sensitized with Mondo grass berry dye DSSC was tested for its performance. An open circuit photovoltage of 495 mV and a short circuit photocurrent of 0.6 mA/cm$^{2}$ were obtained under 1 sun illumination. The broad spectral response from 400 to 750 nm was observed for the Mondo-grass berry dye. A high fill factor of 71% was achieved but energy conversion efficiency was only 0.2% for the cell. Even though cell efficiency is low with this dye, the solar cells have exhibited better stability when compared with that of the Blackberry. The thin layer chromatography results indicate that Mondo-grass berry dye contains a mixture of two or more chemical compounds belonging to both the anthocyanin and the carotenoid families.
Starting Page	7724
Ending Page	7729
Page Count	6
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	28
Issue Number	11
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2017-02-06
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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