Linker effect of ethylenedioxythiophenes in platinum acetylide sensitizers with hybrid starburst donors for dye-sensitized solar cells. (August 2015)

• Record Type: Journal Article
• Authors: Li, Zhong-Yu; Zheng, Zhiwei; Hu, Yue; Wang, Yu; Hua, Jianli; Yang, Hai-Bo; Wu, Wenjun
• Is Part Of: Solar energy. Volume 118(2015)
• Page Start: 441
• Page End: 450
• Publication Date: 2015-08
• Subjects: Dye-sensitized solar cell -- Hybrid starburst donor -- Linker effect -- Platinum acetylide sensitizers; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2015.02.042
• Languages: English
• ISSNs: 0038-092X

Abstract

Graphical abstract: A new serials of D–π–M–π–A platinum alkyne complexes with different conjugated bridge or receptor have been designed and synthesized and the concept of hybrid starburst donor was first introduced into sensitizer design. The cell based onH3, with aminophenyl acetylene and fluorene alkyne as hybrid starburst donor, incorporated with EDOT as π-bridge and cyanoacetic acid as receptor, exhibits a 4.21% conversion efficiency under AM 1.5G sunlight. Highlights: Three novel platinum acetylide sensitizers were synthesized and applied in DSSCs. The EDOT group was introduced into π-bridge. The concept of hybrid starburst donor was first put forward. The PCE of the DSSCs with D–π–M–π–A sensitizer was improved. Abstract: The rational design and synthesis of sensitizers in dye-sensitized solar cells (DSSCs) by adjusting the structure of electron donor, π-bridge, or electron acceptor of D–π–A moieties is an effective mean for optimizing their photovoltaic performance. Herein, three novel D–π–M–π–A platinum acetylide sensitizers with different conjugated bridge or acceptor have been designed and synthesized. In particular, the concept of hybrid starburst donor was first introduced into the design of sensitizers in this study. It was found that the structure of the sensitizers influenced the photoelectric properties through affecting their absorption spectra, HOMO/LUMO orbits and electronic lifetime. The cell based on sensitizerH3, with aminophenyl acetylene and fluorene alkyne as the hybrid starburst donor, incorporating 3, 4-ethylenedioxythiophene (EDOT) as π-bridge and cyanoacetic acid as acceptor, exhibited a 4.21% power-conversion efficiency under AM 1.5G sunlight.