New naphthalenediimides as potential dyes for TiO2-sensitized solar cells
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Published:2021-01-28
Issue:1
Volume:10
Page:
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ISSN:2194-1459
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Container-title:Materials for Renewable and Sustainable Energy
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language:en
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Short-container-title:Mater Renew Sustain Energy
Author:
Castro-Riquelme Christian L., Ochoa-Terán AdriánORCID, Calva-Yáñez J. C., Reynoso-Soto E. A., Félix-Navarro R. M.
Abstract
AbstractIn this work new naphthalenediimides (NDIs) were synthesized and used as dyes in DSSC. The efficiency (η) of the DSSC is influenced by NDIs electronic and structural characteristics. It was found a better cell performance with the NDIs which have a broader absorption band shifted to the red color, high ƹ values, and more adsorption in the anode surface. The band gaps were determinate by UV–vis and cyclic voltammetry. The LUMO orbitals of most of the NDIs are above of the conduction band (CB) energy for TiO2 allowing the electron transfer process from the NDI to the photoanode, especially in those with a significant LUMONDI-CBTi energetic difference. Also, NDIs with polar groups in their structure presented higher η values due to a better adsorption on the photoanode surface, which allows a better energy capture compared with those with lower adsorption.
Funder
Tecnológico Nacional de México Consejo Nacional de Ciencia y Tecnología
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Fuel Technology,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
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