Compatibility between compact and mesoporous TiO2 layers on the optimization of photocurrent density in photoelectrochemical cells

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Abstract

Titanium dioxide (TiO2) is a well-known efficient photocatalyst and electron transport layer for third generation solar cells. Spin coating is commonly used to fabricate TiO2 thin films because of its facile processing protocols and cost-effectiveness. However, the varying of TiO2 layer by using this method get less attention to attain the optimal thickness though the operation is simple and less cost. In this work, TiO2 thin films were deposited by spin coating on fluorine-doped tin oxide (FTO) surfaces. The number of layers of blocking TiO2 (bl-TiO2) and mesoporous TiO2 (mp-TiO2) was varied. The optimal electrical properties of TiO2 were verified by photoelectrochemical (PEC) analysis, and the credible performance of photocurrent density had been obtained. Then, we comprehensively studied the morphological and optical properties of the TiO2 layers to determine the factors that improve PEC performance. The double layers of 38.7 ± 1.96 nm-thick bl-TiO2 and 245.2 ± 3.39 nm-thick mp-TiO2 films were the optimal layers. At optimal conditions, the optical bandgap energy was 3.26 eV, and the photocurrent density was 82.30 μA/cm2 at 0.24 V.

Original languageEnglish
Article number100341
JournalSurfaces and Interfaces
Volume17
DOIs
Publication statusPublished - 1 Dec 2019

Fingerprint

Photoelectrochemical cells
Spin coating
Photocurrents
compatibility
photocurrents
Thin films
optimization
Fluorine
Optical band gaps
Cost effectiveness
Photocatalysts
Tin oxides
cells
Titanium dioxide
Solar cells
Electric properties
Optical properties
coating
Processing
Costs

Keywords

  • Compact
  • Mesoporous
  • Photocurrent density
  • Photoelectrochemical
  • TiO

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

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abstract = "Titanium dioxide (TiO2) is a well-known efficient photocatalyst and electron transport layer for third generation solar cells. Spin coating is commonly used to fabricate TiO2 thin films because of its facile processing protocols and cost-effectiveness. However, the varying of TiO2 layer by using this method get less attention to attain the optimal thickness though the operation is simple and less cost. In this work, TiO2 thin films were deposited by spin coating on fluorine-doped tin oxide (FTO) surfaces. The number of layers of blocking TiO2 (bl-TiO2) and mesoporous TiO2 (mp-TiO2) was varied. The optimal electrical properties of TiO2 were verified by photoelectrochemical (PEC) analysis, and the credible performance of photocurrent density had been obtained. Then, we comprehensively studied the morphological and optical properties of the TiO2 layers to determine the factors that improve PEC performance. The double layers of 38.7 ± 1.96 nm-thick bl-TiO2 and 245.2 ± 3.39 nm-thick mp-TiO2 films were the optimal layers. At optimal conditions, the optical bandgap energy was 3.26 eV, and the photocurrent density was 82.30 μA/cm2 at 0.24 V.",
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author = "Ramli, {N. F.} and Fahsyar, {P. N.A.} and {Ahmad Ludin}, Norasikin and {Mat Teridi}, {Mohd Asri} and Ibrahim, {Mohd. Adib} and Zaidi, {Saleem H.} and Suhaila Sepeai",
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T1 - Compatibility between compact and mesoporous TiO2 layers on the optimization of photocurrent density in photoelectrochemical cells

AU - Ramli, N. F.

AU - Fahsyar, P. N.A.

AU - Ahmad Ludin, Norasikin

AU - Mat Teridi, Mohd Asri

AU - Ibrahim, Mohd. Adib

AU - Zaidi, Saleem H.

AU - Sepeai, Suhaila

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N2 - Titanium dioxide (TiO2) is a well-known efficient photocatalyst and electron transport layer for third generation solar cells. Spin coating is commonly used to fabricate TiO2 thin films because of its facile processing protocols and cost-effectiveness. However, the varying of TiO2 layer by using this method get less attention to attain the optimal thickness though the operation is simple and less cost. In this work, TiO2 thin films were deposited by spin coating on fluorine-doped tin oxide (FTO) surfaces. The number of layers of blocking TiO2 (bl-TiO2) and mesoporous TiO2 (mp-TiO2) was varied. The optimal electrical properties of TiO2 were verified by photoelectrochemical (PEC) analysis, and the credible performance of photocurrent density had been obtained. Then, we comprehensively studied the morphological and optical properties of the TiO2 layers to determine the factors that improve PEC performance. The double layers of 38.7 ± 1.96 nm-thick bl-TiO2 and 245.2 ± 3.39 nm-thick mp-TiO2 films were the optimal layers. At optimal conditions, the optical bandgap energy was 3.26 eV, and the photocurrent density was 82.30 μA/cm2 at 0.24 V.

AB - Titanium dioxide (TiO2) is a well-known efficient photocatalyst and electron transport layer for third generation solar cells. Spin coating is commonly used to fabricate TiO2 thin films because of its facile processing protocols and cost-effectiveness. However, the varying of TiO2 layer by using this method get less attention to attain the optimal thickness though the operation is simple and less cost. In this work, TiO2 thin films were deposited by spin coating on fluorine-doped tin oxide (FTO) surfaces. The number of layers of blocking TiO2 (bl-TiO2) and mesoporous TiO2 (mp-TiO2) was varied. The optimal electrical properties of TiO2 were verified by photoelectrochemical (PEC) analysis, and the credible performance of photocurrent density had been obtained. Then, we comprehensively studied the morphological and optical properties of the TiO2 layers to determine the factors that improve PEC performance. The double layers of 38.7 ± 1.96 nm-thick bl-TiO2 and 245.2 ± 3.39 nm-thick mp-TiO2 films were the optimal layers. At optimal conditions, the optical bandgap energy was 3.26 eV, and the photocurrent density was 82.30 μA/cm2 at 0.24 V.

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