Molecular engineering of organic sensitizers for highly efficient gel-state dye-sensitized solar cells
- Authors
- Choi, Hyeju; Paek, Sanghyun; Lim, Kimin; Kim, Chulwoo; Kang, Moon-Sung; Song, Kihyung; Ko, Jaejung
- Issue Date
- 2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.1, no.28, pp.8226 - 8233
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 1
- Number
- 28
- Start Page
- 8226
- End Page
- 8233
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106489
- DOI
- 10.1039/c3ta11132f
- ISSN
- 2050-7488
- Abstract
- Three novel organic sensitizers incorporating a planar 4,4-dimethyl-4H-indeno[1,2-b]thiophene or 4,4-dimethyl-4H-indeno[1,2-b] thienothiophene in the bridged group have been designed and synthesized for use in gel-state dye-sensitized solar cells. The photovoltaic performance is quite sensitive to the bridged unit. The optimized cell in JK-276 using a gel electrolyte gave a short circuit photocurrent density of 16.61 mA cm(-2), an open circuit voltage of 0.69 V and a fill factor of 0.72, affording an overall conversion efficiency of 8.31% under standard global AM 1.5 solar cell conditions. The efficiency is close to the value of the liquid-state cell (8.40%). The gel-electrolyte cell of JK-276 showed an excellent long-term stability, which remained almost unchanged during the 300 h light soaking test at 70 degrees C.
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