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

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9 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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