Highly photoactive Cu2O nanowire film prepared with modified scalable synthesis method for enhanced photoelectrochemical performance

Mohd Nur Ikhmal Salehmin, Lorna Effery Minggu, Wun Fui Mark-Lee, Mohamad Azuwa Mohamed, Arifin Khuzaimah, Mohammad Hafizuddin Jumali, Mohammad Kassim

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16 Citations (Scopus)

Abstract

High-quality Cu2O nanowire (NW) photocathode was successfully fabricated upon annealing Cu(OH)2 NW precursor. The precursor was prepared via a wet chemical oxidation method [Cu foil + (NH4)2S2O8 + NaOH] which is always accompanied with unfavourable nanostructured CuO. However, the present study has synthesized the precursor without the emergence of CuO with modified growth solution at room temperature. Under proper growth condition, the height and width of pure, vertically erected Cu(OH)2 NW has increased proportionally to the ageing time for growing NW. The photoelectrochemical (PEC) measurement of Cu2O NW under 100 mW cm−2 light irradiation and 0.5 M Na2SO4 electrolyte solution, has generated − 5.45 mA cm−2 at − 0.6 V vs. Ag/AgCl. The high photocurrent density was attributed to the high carrier density (2.69 × 1021 cm−3) accompanied with a low charge transfer resistant under illumination. The inexpensive and highly scalable Cu2O NW is a promising photocathode for PEC solar to energy application.

Original languageEnglish
Pages (from-to)237-245
Number of pages9
JournalSolar Energy Materials and Solar Cells
Volume182
DOIs
Publication statusPublished - 1 Aug 2018

Fingerprint

Nanowires
Photocathodes
Photocurrents
Metal foil
Electrolytes
Carrier concentration
Charge transfer
Aging of materials
Lighting
Irradiation
Annealing
Oxidation
Temperature
cupric hydroxide

Keywords

  • Chemical oxidation method
  • Copper hydroxide nanowire
  • Cuprous oxide nanowire
  • Photoelectrochemical

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

Cite this

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abstract = "High-quality Cu2O nanowire (NW) photocathode was successfully fabricated upon annealing Cu(OH)2 NW precursor. The precursor was prepared via a wet chemical oxidation method [Cu foil + (NH4)2S2O8 + NaOH] which is always accompanied with unfavourable nanostructured CuO. However, the present study has synthesized the precursor without the emergence of CuO with modified growth solution at room temperature. Under proper growth condition, the height and width of pure, vertically erected Cu(OH)2 NW has increased proportionally to the ageing time for growing NW. The photoelectrochemical (PEC) measurement of Cu2O NW under 100 mW cm−2 light irradiation and 0.5 M Na2SO4 electrolyte solution, has generated − 5.45 mA cm−2 at − 0.6 V vs. Ag/AgCl. The high photocurrent density was attributed to the high carrier density (2.69 × 1021 cm−3) accompanied with a low charge transfer resistant under illumination. The inexpensive and highly scalable Cu2O NW is a promising photocathode for PEC solar to energy application.",
keywords = "Chemical oxidation method, Copper hydroxide nanowire, Cuprous oxide nanowire, Photoelectrochemical",
author = "Salehmin, {Mohd Nur Ikhmal} and {Effery Minggu}, Lorna and Mark-Lee, {Wun Fui} and Mohamed, {Mohamad Azuwa} and Arifin Khuzaimah and Jumali, {Mohammad Hafizuddin} and Mohammad Kassim",
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AU - Salehmin, Mohd Nur Ikhmal

AU - Effery Minggu, Lorna

AU - Mark-Lee, Wun Fui

AU - Mohamed, Mohamad Azuwa

AU - Khuzaimah, Arifin

AU - Jumali, Mohammad Hafizuddin

AU - Kassim, Mohammad

PY - 2018/8/1

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N2 - High-quality Cu2O nanowire (NW) photocathode was successfully fabricated upon annealing Cu(OH)2 NW precursor. The precursor was prepared via a wet chemical oxidation method [Cu foil + (NH4)2S2O8 + NaOH] which is always accompanied with unfavourable nanostructured CuO. However, the present study has synthesized the precursor without the emergence of CuO with modified growth solution at room temperature. Under proper growth condition, the height and width of pure, vertically erected Cu(OH)2 NW has increased proportionally to the ageing time for growing NW. The photoelectrochemical (PEC) measurement of Cu2O NW under 100 mW cm−2 light irradiation and 0.5 M Na2SO4 electrolyte solution, has generated − 5.45 mA cm−2 at − 0.6 V vs. Ag/AgCl. The high photocurrent density was attributed to the high carrier density (2.69 × 1021 cm−3) accompanied with a low charge transfer resistant under illumination. The inexpensive and highly scalable Cu2O NW is a promising photocathode for PEC solar to energy application.

AB - High-quality Cu2O nanowire (NW) photocathode was successfully fabricated upon annealing Cu(OH)2 NW precursor. The precursor was prepared via a wet chemical oxidation method [Cu foil + (NH4)2S2O8 + NaOH] which is always accompanied with unfavourable nanostructured CuO. However, the present study has synthesized the precursor without the emergence of CuO with modified growth solution at room temperature. Under proper growth condition, the height and width of pure, vertically erected Cu(OH)2 NW has increased proportionally to the ageing time for growing NW. The photoelectrochemical (PEC) measurement of Cu2O NW under 100 mW cm−2 light irradiation and 0.5 M Na2SO4 electrolyte solution, has generated − 5.45 mA cm−2 at − 0.6 V vs. Ag/AgCl. The high photocurrent density was attributed to the high carrier density (2.69 × 1021 cm−3) accompanied with a low charge transfer resistant under illumination. The inexpensive and highly scalable Cu2O NW is a promising photocathode for PEC solar to energy application.

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