Effect of Al doping on the carrier transport characteristics of TiO2 thin films anchored on glass substrates

Bhat, Shreesha; Sandeep, K.; Kumar, Prasad; Venu, M. Parvathy; Dharmaprakash, S. M.; Bhat, J. S.

doi:10.1007/s00339-019-2464-5

Cited by 10 publications

(5 citation statements)

References 37 publications

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“…Reduction in refractive index at higher wavelengths is due to a decrease in optical surface dispersion, polarizability and optical losses which may be due to reduction in surface roughness and enhancement in carrier concentration 100 . In many studies, the same results have been reported, 101‐104 and with these demonstrated properties, the films look promising for solar cell applications.…”

Section: Resultsmentioning

confidence: 76%

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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Summary ZnO, 1% Ti doped ZnO and 1% Ti and (0.5%, 1%, and 1.5%) Cu co‐doped ZnO thin films are deposited on fluorine doped tin oxide glass substrates using sol‐gel technique. The impact of Ti and Cu co‐doping on optical, structural, and photovoltaic properties of ZnO thin films have been analyzed. X‐ray diffraction also confirms the hexagonal wurtzite crystal structure of the film. The 1% Ti and 1% Cu co‐doping percentage has an astonishing impact on the structural properties of the doped film, such as large grain size (19 nm), d‐spacing (2.48 Å), small dislocation line density (2.96 × 1015 m−2), lattice parameters (a = b = 3.2 Å, c = 5.2 Å), bond length (1.9 Å) and positional parameter (3.7 × 10−1) of the ZnO thin film. Optical parameters like reflectance, absorbance, transmittance, refractive index, and dielectric constants are calculated in the range of spectral from (250‐750) nm by using an ultraviolet ‐ visible spectrophotometer. In the visible region, all the films have approximately 85% transmittance, which is excellent for solar cells. The ZnO film prepared at the co‐doping percentage of 1% Ti and 1% Cu has high absorbance, high refractive index (2.09) and small band gap energy (3.37 eV) as compared to other doped films. The dye‐sensitized solar cells of these films as a Photoanode have been fabricated and studied the efficiency variation of films. It is found that the performance of the dye‐sensitized solar cell (DSSC) using a Ti‐Cu co‐doped film is much better than a pure ZnO film. The highest efficiency of DSSC 2.38% is achieved in the dye‐sensitized solar cell by using a 1% Ti and 1% Cu co‐doped ZnO thin film. When Ti is doped in ZnO then the surface area and pore size of the ZnO increased, which increase the dye loading ability. Cu reduces the recombination rate and enhances the electron injection efficiency rate from the dye to the conduction band of ZnO. Therefore, it is suggested that the thin films prepared by co‐doping of Cu and Ti into ZnO will upgrade the efficiency of cell.

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Section: Resultsmentioning

confidence: 76%

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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“…5 shows the PL spectra of all samples measured at room temperature, including pure TiO 2 , ATO 60, ATO 120, and ATO 180, which were similar to those in the previous study of Al-doped TiO 2 . 24 For all PL spectra, at an excitation wavelength of 310 nm, the emission photon energy peak appeared sharply at the wavelength of 357 nm, (3.37 eV in terms of photon energy), as shown in Fig. 5(a).…”

Section: Resultsmentioning

confidence: 73%

An Al-doped TiO₂ interfacial layer for effective hole injection characteristics of quantum-dot light-emitting diodes

et al. 2022

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“…[1]- [4]. Titanium dioxide (TiO2) is recognised as the most adaptable MOS material among others such as In2O3, ZnO, and SnO3 because to its extensive technological applications, including gas sensors [5], photocatalysts [6]- [8], biomedical [9], and solar cell devices [10]- [13].…”

Section: Research Article Aluminum Doped Titanium Dioxide Thin Film F...mentioning

confidence: 99%

“…As for photovoltaic application, higher light transmittance through the window layer is important in TiO2 based photovoltaic cells. Bhat et al reported that significant changes in the transmittance of the prepared film with the increase of the of Al dopant percentage [13].…”

Section: Research Article Aluminum Doped Titanium Dioxide Thin Film F...mentioning

confidence: 99%

Aluminum Doped Titanium Dioxide Thin Film for Perovskite Electron Transport Layer

Hashim

Ismail

Supee

et al. 2022

Mal. J. Fund. Appl. Sci.

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Aluminum (Al) doped titanium dioxide thin film with different Al doping concentration (Al = 0 mol%, 1 mol%, 3 mol%, 5 mol% and 7 mol%) were deposited using solution spin coating technique and the effect of Al concentration on the structural, morphological and optical properties were examine. All samples were annealed at 450°C for 1 hour. XRD reveal that the films exhibits anatase crystal phase at (101) peak orientation. Based on the FESEM and AFM image it is found that, surface morphology of the film was significantly affected with different doping concentration. Al doped titanium dioxide with 3 mol% Al concentration shows the highest transmittance compared to others samples. Consequently, it is shown that different Al doping concentration plays vital roles in producing an optimum Al doped titanium dioxide thin films samples.

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Effect of Al doping on the carrier transport characteristics of TiO2 thin films anchored on glass substrates

Cited by 10 publications

References 37 publications

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

An Al-doped TiO₂ interfacial layer for effective hole injection characteristics of quantum-dot light-emitting diodes

Aluminum Doped Titanium Dioxide Thin Film for Perovskite Electron Transport Layer

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Effect of Al doping on the carrier transport characteristics of TiO2 thin films anchored on glass substrates

Cited by 10 publications

References 37 publications

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

An Al-doped TiO2 interfacial layer for effective hole injection characteristics of quantum-dot light-emitting diodes

Aluminum Doped Titanium Dioxide Thin Film for Perovskite Electron Transport Layer

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An Al-doped TiO₂ interfacial layer for effective hole injection characteristics of quantum-dot light-emitting diodes