Application of dyes extracted from Alternanthera dentata leaves and Musa acuminata bracts as natural sensitizers for dye-sensitized solar cells

Mahmoud A.M. Al-Alwani, Norasikin Ahmad Ludin, Abu Bakar Mohamad, Abdul Amir H. Kadhum, Abduljabbar Mukhlus

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The natural dyes anthocyanin and chlorophyll were extracted from Musa acuminata bracts and Alternanthera dentata leaves, respectively. The dyes were then applied as sensitizers in TiO2-based dye-sensitized solar cells (DSSCs). The ethanol extracts of the dyes had maximum absorbance. High dye yields were obtained under extraction temperatures of 70 to 80°C, and the optimal extraction temperature was approximately 80°C. Moreover, dye concentration sharply decreased under extraction temperatures that exceeded 80°C. High dye concentrations were obtained using acidic extraction solutions, particularly those with a pH value of 4. The DSSC fabricated with anthocyanin from M. acuminata bracts had a conversion efficiency of 0.31%, short-circuit current (I sc ) of 0.9mA/cm2, open-circuit voltage (V oc ) of 0.58V, and fill factor (FF) of 62.22%. The DSSC sensitized with chlorophyll from A. dentata leaves had a conversion efficiency of 0.13%, I sc of 0.4mA/cm-2 , V oc of 0.54V, and FF of 67.5%. The DSSC sensitized with anthocyanin from M. acuminata bracts had a maximum incident photon-to-current conversion efficiency of 42%, which was higher than that of the DSSC sensitized with chlorophyll from A. dentata leaves (23%). Anthocyanin from M. acuminata bracts exhibited the best photosensitization effects.

Original languageEnglish
JournalSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
DOIs
Publication statusAccepted/In press - 2017

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Anthocyanins
leaves
Coloring Agents
Dyes
solar cells
dyes
Chlorophyll
Conversion efficiency
chlorophylls
Open circuit voltage
Short circuit currents
Temperature
Dye-sensitized solar cells
Ethanol
Photons
short circuit currents
open circuit voltage
temperature
ethyl alcohol
photons

Keywords

  • A. dentata
  • Anthocyanin
  • Chlorophyll
  • DSSC
  • M. acuminata
  • Natural dyes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

Cite this

@article{6bbc1116ec504717815450a10092e085,
title = "Application of dyes extracted from Alternanthera dentata leaves and Musa acuminata bracts as natural sensitizers for dye-sensitized solar cells",
abstract = "The natural dyes anthocyanin and chlorophyll were extracted from Musa acuminata bracts and Alternanthera dentata leaves, respectively. The dyes were then applied as sensitizers in TiO2-based dye-sensitized solar cells (DSSCs). The ethanol extracts of the dyes had maximum absorbance. High dye yields were obtained under extraction temperatures of 70 to 80°C, and the optimal extraction temperature was approximately 80°C. Moreover, dye concentration sharply decreased under extraction temperatures that exceeded 80°C. High dye concentrations were obtained using acidic extraction solutions, particularly those with a pH value of 4. The DSSC fabricated with anthocyanin from M. acuminata bracts had a conversion efficiency of 0.31{\%}, short-circuit current (I sc ) of 0.9mA/cm2, open-circuit voltage (V oc ) of 0.58V, and fill factor (FF) of 62.22{\%}. The DSSC sensitized with chlorophyll from A. dentata leaves had a conversion efficiency of 0.13{\%}, I sc of 0.4mA/cm-2 , V oc of 0.54V, and FF of 67.5{\%}. The DSSC sensitized with anthocyanin from M. acuminata bracts had a maximum incident photon-to-current conversion efficiency of 42{\%}, which was higher than that of the DSSC sensitized with chlorophyll from A. dentata leaves (23{\%}). Anthocyanin from M. acuminata bracts exhibited the best photosensitization effects.",
keywords = "A. dentata, Anthocyanin, Chlorophyll, DSSC, M. acuminata, Natural dyes",
author = "Al-Alwani, {Mahmoud A.M.} and {Ahmad Ludin}, Norasikin and Mohamad, {Abu Bakar} and Kadhum, {Abdul Amir H.} and Abduljabbar Mukhlus",
year = "2017",
doi = "10.1016/j.saa.2017.11.018",
language = "English",
journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
issn = "1386-1425",
publisher = "Elsevier",

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TY - JOUR

T1 - Application of dyes extracted from Alternanthera dentata leaves and Musa acuminata bracts as natural sensitizers for dye-sensitized solar cells

AU - Al-Alwani, Mahmoud A.M.

AU - Ahmad Ludin, Norasikin

AU - Mohamad, Abu Bakar

AU - Kadhum, Abdul Amir H.

AU - Mukhlus, Abduljabbar

PY - 2017

Y1 - 2017

N2 - The natural dyes anthocyanin and chlorophyll were extracted from Musa acuminata bracts and Alternanthera dentata leaves, respectively. The dyes were then applied as sensitizers in TiO2-based dye-sensitized solar cells (DSSCs). The ethanol extracts of the dyes had maximum absorbance. High dye yields were obtained under extraction temperatures of 70 to 80°C, and the optimal extraction temperature was approximately 80°C. Moreover, dye concentration sharply decreased under extraction temperatures that exceeded 80°C. High dye concentrations were obtained using acidic extraction solutions, particularly those with a pH value of 4. The DSSC fabricated with anthocyanin from M. acuminata bracts had a conversion efficiency of 0.31%, short-circuit current (I sc ) of 0.9mA/cm2, open-circuit voltage (V oc ) of 0.58V, and fill factor (FF) of 62.22%. The DSSC sensitized with chlorophyll from A. dentata leaves had a conversion efficiency of 0.13%, I sc of 0.4mA/cm-2 , V oc of 0.54V, and FF of 67.5%. The DSSC sensitized with anthocyanin from M. acuminata bracts had a maximum incident photon-to-current conversion efficiency of 42%, which was higher than that of the DSSC sensitized with chlorophyll from A. dentata leaves (23%). Anthocyanin from M. acuminata bracts exhibited the best photosensitization effects.

AB - The natural dyes anthocyanin and chlorophyll were extracted from Musa acuminata bracts and Alternanthera dentata leaves, respectively. The dyes were then applied as sensitizers in TiO2-based dye-sensitized solar cells (DSSCs). The ethanol extracts of the dyes had maximum absorbance. High dye yields were obtained under extraction temperatures of 70 to 80°C, and the optimal extraction temperature was approximately 80°C. Moreover, dye concentration sharply decreased under extraction temperatures that exceeded 80°C. High dye concentrations were obtained using acidic extraction solutions, particularly those with a pH value of 4. The DSSC fabricated with anthocyanin from M. acuminata bracts had a conversion efficiency of 0.31%, short-circuit current (I sc ) of 0.9mA/cm2, open-circuit voltage (V oc ) of 0.58V, and fill factor (FF) of 62.22%. The DSSC sensitized with chlorophyll from A. dentata leaves had a conversion efficiency of 0.13%, I sc of 0.4mA/cm-2 , V oc of 0.54V, and FF of 67.5%. The DSSC sensitized with anthocyanin from M. acuminata bracts had a maximum incident photon-to-current conversion efficiency of 42%, which was higher than that of the DSSC sensitized with chlorophyll from A. dentata leaves (23%). Anthocyanin from M. acuminata bracts exhibited the best photosensitization effects.

KW - A. dentata

KW - Anthocyanin

KW - Chlorophyll

KW - DSSC

KW - M. acuminata

KW - Natural dyes

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DO - 10.1016/j.saa.2017.11.018

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JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

SN - 1386-1425

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