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Phenoxazine dyes in solid-state dye-sensitized solar cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
27130 44003 2012 5 PDF Available
Title
Phenoxazine dyes in solid-state dye-sensitized solar cells
Abstract

Several structural modifications have been made to a sensitizer dye based on the phenoxazine core, which was tested in a solid-state dye-sensitized solar cell configuration based on the hole transporting material 2,2′,7,7′,-tetrakis(N,N-di-p-methoxyphenyl-amine)-9,9′,-spirofluorene. Light-to-power conversion efficiencies between 2.5% and 4.1% are reported herein. The difference in device performance is significantly related to the variations of dye molecular structure, with dye molecules having surface protecting alkoxy-groups yielding better solar cell devices. The phenoxazine dyes were characterized by their light harvesting capabilities and electronic properties such as electron recombination lifetime and chemical dipole moment.

► Solid state dye-sensitized solar cell using a series of organic dyes with up to 4.1% efficiency. ► Relation between dye structure and solar cell performance. ► Band-edge shifts due to dipole effects. ► Electron lifetime increase due toalkoxy groups.

Keywords
Dye-sensitized; Solar cells; Spiro-OMeTAD; Dipole; Solid-state
First Page Preview
Phenoxazine dyes in solid-state dye-sensitized solar cells
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 239, 1 July 2012, Pages 55–59
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering