Annealing temperature effect on structural, morphological and optical parameters of mesoporous TiO2 film photoanode for dye-sensitized solar cell application

• Autorzy: Hossain M. K. , Pervez M. F. , Mia M. N. H. , Tayyaba S. , Uddin M. J. , Ahamed R. , Khan R. A. , Hoq M. , Khan M. A. , Ahmed F.

Identyfikatory

DOI

10.1515/msp-2017-0082

• Języki publikacji: EN

Abstrakty

EN

Use of Degussa P25 titanium-dioxide nanopowder in dye-sensitized solar cell (DSSC) photoanode improves efficiency of the DSSC cell. Annealing of titanium dioxide is required for fabrication of crystalline mesoporous thin film photoanode on transparent conducting glass using doctor blade method. Different annealing temperatures provide different structural, morphological, and optical properties of the photoanode, which may influence the efficiency of the cell. In this paper, energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and UV-Vis-NIR spectroscopicanalysis have been carried out to investigate annealing temperature effect on various structural parameters, mole-fraction, phase-content, and optical bandgap of the TiO₂ film photoanode. It was observed that depending on annealing temperature, theratio of polymorphs of Degussa P25 changed substantially. For the change in annealing temperature from 350 °C to 600 °C, variations occurred in crystallite size from 11.9 nm to 24.9 nm, strain from 0.006 to 0.014, specific surface area from 62.77 m²·g^-1 to 125.74 m²·g^-1, morphology index from 0.49 to 0.64, dislocation density from 5 × 10¹³ line/m² to 8 × 10¹⁵ line/m²·, crystallite per unit surface area from 2 × 10¹³ m^-2·to 2.5 × 10¹⁴·m^-2·, and optical bandgap from 2.4 eV to 3.1 eV.

Słowa kluczowe

EN

TiO2 photoanode; mesoporous TiO2; doctor blade method; Degussa P25; optical bandgap; spectroscopic analysis

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2017
• Tom: Vol. 35, No. 4
• Strony: 868--877
• Opis fizyczny: Bibliogr. 37 poz., rys., tab.

Twórcy

autor

Hossain M. K.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh
• Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh

autor

Pervez M. F.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh

autor

Mia M. N. H.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh

autor

Tayyaba S.

• Dept. of Computer Engineering, The University of Lahore, Lahore 54000, Pakistan

autor

Uddin M. J.

autor

Ahamed R.

• Dept. of Material Science and Engineering, University of Rajshahi, Rajshahi-6205, Bangladesh

autor

Khan R. A.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh

autor

Hoq M.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh

autor

Khan M. A.

• Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, GPO Box. 3787, Dhaka 1349, Bangladesh

autor

Ahmed F.

• Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).