A New Class of Cyclometalated Ruthenium Sensitizers of the Type CNN for Efficient Dye-Sensitized Solar Cells
- Authors
- Kim, Jeum-Jong; Choi, Hyunbong; Paek, Sanghyun; Kim, Chulwoo; Lim, Kimin; Ju, Myung-Jong; Kang, Hong Seok; Kang, Moon-Sung; Ko, Jaejung
- Issue Date
- 21-11월-2011
- Publisher
- AMER CHEMICAL SOC
- Citation
- INORGANIC CHEMISTRY, v.50, no.22, pp.11340 - 11347
- Indexed
- SCIE
SCOPUS
- Journal Title
- INORGANIC CHEMISTRY
- Volume
- 50
- Number
- 22
- Start Page
- 11340
- End Page
- 11347
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111128
- DOI
- 10.1021/ic200872a
- ISSN
- 0020-1669
- Abstract
- A new class of cyclometalated ruthenium sensitizers incorporating a CNN ligand and conjugated 2,2'-bipyridine in the ancillary ligand have been designed and synthesized. The photovoltaic performance of JK-206 using an electrolyte containing 0.6 M 1,2-dimethyl-3-propylimidazolium iodide, 0.05 M I(2), 0.1 M LiI, and 0.5 M tert-butylpyridine in CH(3)CN gave a short-circuit photocurrent density of 19.63 mA cm(-2), an open-circuit voltage of 0.74 V, and a fill factor of 0.72, affording an overall conversion efficiency of 10.39%. The efficiency is the highest one reported for dye-sensitized solar cells based on the cyclometalated ruthenium sensitizer of the type CNN. Moreover, the same device using a polymer gel electrolyte exhibited a remarkable stability under 1000 h of light soaking at 60 degrees C, retaining 91% of the initial efficiency of 7.14%.
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Collections - College of Science and Technology > Department of Advanced Materials Chemistry > 1. Journal Articles
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