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Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells

A series of phenothiazine based dyes (OMS1–3), comprising different conjugation lengths and numbers of electron deficient (cyanovinyl) moieties with cyanoacrylic acid as an anchor, have been synthesized. The dyes display broad UV-visible absorption, from 389 nm to 484 nm. The higher molar extinction...

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Autores principales: Chen, Yung-Chung, Kuo, Yuan-Tsung, Liang, Chia-Jung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078743/
https://www.ncbi.nlm.nih.gov/pubmed/35540859
http://dx.doi.org/10.1039/c7ra13751f
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author Chen, Yung-Chung
Kuo, Yuan-Tsung
Liang, Chia-Jung
author_facet Chen, Yung-Chung
Kuo, Yuan-Tsung
Liang, Chia-Jung
author_sort Chen, Yung-Chung
collection PubMed
description A series of phenothiazine based dyes (OMS1–3), comprising different conjugation lengths and numbers of electron deficient (cyanovinyl) moieties with cyanoacrylic acid as an anchor, have been synthesized. The dyes display broad UV-visible absorption, from 389 nm to 484 nm. The higher molar extinction coefficient and longer absorption peak are achieved as the conjugation length and numbers of electron deficient units increase. The cell performance based on these dyes exhibits efficiencies ranging from 0.68–4.00%, compared to a standard N719-based device (PCE = 7.49%) fabricated under similar conditions. Although the OMS3 dye has two electron deficient units between phenothiazine units, an insignificant electron trapping effect is observed. From the results, the OMS3 based cell exhibits the highest short circuit current (J(SC)) at 8.72 mA cm(−2) and the highest open-circuit voltage (V(OC)) at 0.66 V, together with the best cell performance at 4.00%.
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spelling pubmed-90787432022-05-09 Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells Chen, Yung-Chung Kuo, Yuan-Tsung Liang, Chia-Jung RSC Adv Chemistry A series of phenothiazine based dyes (OMS1–3), comprising different conjugation lengths and numbers of electron deficient (cyanovinyl) moieties with cyanoacrylic acid as an anchor, have been synthesized. The dyes display broad UV-visible absorption, from 389 nm to 484 nm. The higher molar extinction coefficient and longer absorption peak are achieved as the conjugation length and numbers of electron deficient units increase. The cell performance based on these dyes exhibits efficiencies ranging from 0.68–4.00%, compared to a standard N719-based device (PCE = 7.49%) fabricated under similar conditions. Although the OMS3 dye has two electron deficient units between phenothiazine units, an insignificant electron trapping effect is observed. From the results, the OMS3 based cell exhibits the highest short circuit current (J(SC)) at 8.72 mA cm(−2) and the highest open-circuit voltage (V(OC)) at 0.66 V, together with the best cell performance at 4.00%. The Royal Society of Chemistry 2018-03-09 /pmc/articles/PMC9078743/ /pubmed/35540859 http://dx.doi.org/10.1039/c7ra13751f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Chen, Yung-Chung
Kuo, Yuan-Tsung
Liang, Chia-Jung
Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title_full Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title_fullStr Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title_full_unstemmed Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title_short Numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
title_sort numbers of cyanovinyl substitutes and their effect on phenothiazine based organic dyes for dye-sensitized solar cells
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078743/
https://www.ncbi.nlm.nih.gov/pubmed/35540859
http://dx.doi.org/10.1039/c7ra13751f
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