Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 9, Pages 4886-4893Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202013964
Keywords
electrochemistry; energy conversion; porphyrinoids; renewable resources
Categories
Funding
- Ministry of Science and Technology, Taiwan [MOST107-2113-M-005-010-MY3, MOST108-2221-E-007-102-MY3]
- Innovation and Development Center of Sustainable Agriculture of The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan
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The newly designed double fence porphyrin dyes show better performance in high-performance DSSCs compared to single fence porphyrin dyes, attributed to reduced dye aggregation and decreased charge-recombination rate. This demonstrates that the double fence structure is a promising design strategy for efficient porphyrin sensitizers.
A series of new double fence porphyrin dyes bJS1-bJS3, with eight long alkoxyl chains attached to four beta-phenyl groups, have been designed and synthesized. The single fence meso-substituted counterparts mJS1-mJS3 were also prepared as reference dyes. Dyes bJS1-bJS3 and mJS1-mJS3 exhibit power conversion efficiencies of 8.03-10.69 % and 2.33-6.69 %, respectively. Based on photovoltaic studies, the remarkable cell performance of double fence porphyrin sensitizers can be attributed to reduced dye aggregation and a decreased charge-recombination rate. Notably, porphyrins bJS2 and bJS3 exhibit better efficiency than the benchmark YD2-o-C8 (9.83 % in this work), demonstrating that the double fence structure is a promising design strategy for efficient porphyrin sensitizers in high-performance DSSCs.
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