High Molar Extinction Coefficient Organic Sensitizers for Efficient Dye-Sensitized Solar Cells
- Authors
- Choi, Hyunbong; Raabe, Ines; Kim, Duckhyun; Teocoli, Francesca; Kim, Chulwoo; Song, Kihyung; Yum, Jun-Ho; Ko, Jaejung; Nazeeruddin, Md. K.; Graetzel, Michael
- Issue Date
- 2010
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- dyes/pigments; sensitizers; solar cells; solid-state electrolytes; thienothiopenes
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.16, no.4, pp.1193 - 1201
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 16
- Number
- 4
- Start Page
- 1193
- End Page
- 1201
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118541
- DOI
- 10.1002/chem.200902197
- ISSN
- 0947-6539
- Abstract
- We have designed and synthesized highly efficient organic sensitizers with a planar thienothiophene-vinylene-thienothiophene linker. Under standard global AM 1.5 solar conditions, the JK-113-sensitized cell gave a short circuit photocurrent density (J(sc)) of 17.61 mAcm(-2), an open-circuit voltage (V-oc) of 0.71 V, and a fill factor (FF) of 72%, corresponding to an overall conversion efficiency (eta) of 9.1%. The incident monochromatic photo-to-current conversion efficiency (IPCE) of JK-113 exceeds 80% over the spectral region from 400 to 640 nm, reaching its maximum of 93% at 475 nm. The band tails off toward 770 nm, contributing to the broad spectral light harvesting. Solar-cell devices based oil the sensitizer JK-113 in conjunction with a volatile electrolyte and a solvent-free ionic liquid electrolyte gave high conversion efficiencies of 9.1% and 7.9%, respectively. The JK-113-based solar cell fabricated using a solvent-free ionic liquid electrolyte showed excellent stability under light soaking at 60 degrees C for 1000 h.
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- Appears in
Collections - College of Science and Technology > Department of Advanced Materials Chemistry > 1. Journal Articles
- Graduate School > Department of Material Chemistry > 1. Journal Articles
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