Incorporation of g-C3N4/Ag dopant in TiO2 as electron transport layer for organic solar cells

Mohd Fairuz Soh, Mohamad Firdaus Mohamad Noh, Nurul Aida Mohamed, Javad Safaei, Nurul Nazli Rosli, Eng Liang Lim, Chi Chin Yap, Mohd Asri Mat Teridi

Research output: Contribution to journalArticle

Abstract

Graphitic carbon nitride (g-C3N4) and silver (Ag) co-modified titanium (IV) oxide (TiO2) was developed and employed as electron transport layer (ETL) in organic solar cell (OSC) to improve electron extraction and transport. The morphological, optical and electrical properties of the ETL were investigated using X-ray diffraction, atomic force microscopy and photocurrent density-voltage measurement. The OSC exhibited maximum power conversion efficiency of 1.7% which is 30% and 13% higher than devices based on pristine TiO2 and g-C3N4/TiO2 nanocomposite, respectively. The enhancement of OSC performance was primarily ascribed to (1) smoother surface of ETL ensuring good interfacial adhesion between ETL and polymer layer, (2) enhanced light scattering effect and (3) effective electron collection and suppressed recombination at ETL/polymer interface.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalMaterials Letters
Volume253
DOIs
Publication statusPublished - 15 Oct 2019

Fingerprint

solar cells
Doping (additives)
electrons
Polymers
Carbon nitride
Electrons
Titanium oxides
Voltage measurement
Photocurrents
Silver
Light scattering
Conversion efficiency
Atomic force microscopy
carbon nitrides
Nanocomposites
Electric properties
Adhesion
polymers
Optical properties
Electron Transport

Keywords

  • Graphitic carbon nitride
  • Organic solar cells
  • Semiconductors
  • Silver
  • Thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Incorporation of g-C3N4/Ag dopant in TiO2 as electron transport layer for organic solar cells. / Soh, Mohd Fairuz; Noh, Mohamad Firdaus Mohamad; Mohamed, Nurul Aida; Safaei, Javad; Rosli, Nurul Nazli; Lim, Eng Liang; Yap, Chi Chin; Mat Teridi, Mohd Asri.

In: Materials Letters, Vol. 253, 15.10.2019, p. 117-120.

Research output: Contribution to journalArticle

Soh, Mohd Fairuz ; Noh, Mohamad Firdaus Mohamad ; Mohamed, Nurul Aida ; Safaei, Javad ; Rosli, Nurul Nazli ; Lim, Eng Liang ; Yap, Chi Chin ; Mat Teridi, Mohd Asri. / Incorporation of g-C3N4/Ag dopant in TiO2 as electron transport layer for organic solar cells. In: Materials Letters. 2019 ; Vol. 253. pp. 117-120.
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AU - Safaei, Javad

AU - Rosli, Nurul Nazli

AU - Lim, Eng Liang

AU - Yap, Chi Chin

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AB - Graphitic carbon nitride (g-C3N4) and silver (Ag) co-modified titanium (IV) oxide (TiO2) was developed and employed as electron transport layer (ETL) in organic solar cell (OSC) to improve electron extraction and transport. The morphological, optical and electrical properties of the ETL were investigated using X-ray diffraction, atomic force microscopy and photocurrent density-voltage measurement. The OSC exhibited maximum power conversion efficiency of 1.7% which is 30% and 13% higher than devices based on pristine TiO2 and g-C3N4/TiO2 nanocomposite, respectively. The enhancement of OSC performance was primarily ascribed to (1) smoother surface of ETL ensuring good interfacial adhesion between ETL and polymer layer, (2) enhanced light scattering effect and (3) effective electron collection and suppressed recombination at ETL/polymer interface.

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