title: High-performance aqueous/organic dye-sensitized solar cells based on sensitizers containing triethylene oxide methyl ether.
abstract: Metal-free dyes (EO1 to EO4) containing the hydrophilic triethylene oxide methyl ether (TEOME) unit in the spacer have been synthesized and used in dye-sensitized solar cells (DSSCs). Efficient lithium-ion trapping by TEOME results in improved open-circuit voltage (VOC ), leading to excellent conversion efficiency of the cells, ranging from 9.02 to 9.98 % with I(-) /I3 (-) electrolyte in acetonitrile under AM 1.5 illumination. The TEOME unit also enhances the wettability of the dye molecules for application in aqueous-based DSSCs. Aqueous-based DSSCs with a dual TEMPO/iodide electrolyte exhibit high VOC values (0.80-0.88 V) and very promising cell performances of up to 5.97 %.
authors.affiliation: Institute of Chemistry, Academia Sinica, Nankang 11529, Taipei (Taiwan)ca.edu.tw.
authors.forename: Ryan Yeh-Yung
authors.initials: RY
authors.lastname: Lin
authors.affiliation: Institute of Chemistry, Academia Sinica, Nankang 11529, Taipei (Taiwan)ca.edu.tw.
authors.forename: Feng-Ling
authors.initials: FL
authors.lastname: Wu
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan).
authors.forename: Chun-Ting
authors.initials: CT
authors.lastname: Li
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan).
authors.forename: Pei-Yu
authors.initials: PY
authors.lastname: Chen
authors.affiliation: Department of Chemical Engineering, National Taiwan University, Taipei 10617 (Taiwan). kcho@ntu.edu.tw.|Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617 (Taiwan). kcho@ntu.edu.tw.
authors.forename: Kuo-Chuan
authors.initials: KC
authors.lastname: Ho
authors.affiliation: Institute of Chemistry, Academia Sinica, Nankang 11529, Taipei (Taiwan)ca.edu.tw. jtlin@gate.sini.
authors.forename: Jiann T
authors.initials: JT
authors.lastname: Lin
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D011211:Electric Power Supplies; D004563:Electrochemistry; D005027:Ethylene Oxide / Q000031:analogs & derivatives* / Q000737:chemistry; D008738:Methyl Ethers / Q000737:chemistry*; D010640:Phenothiazines / Q000737:chemistry*; D012993:Solar Energy
chemical_list: D004396:Coloring Agents; D008738:Methyl Ethers; D010640:Phenothiazines; D005027:Ethylene Oxide
keywords: dyes/pigments; electrochemistry; sensitizers; solar cells; synthesis design