Influence of titanium tetrachloride concentration and multiple growth cycles of TiO2 nanorod on photoanode performance in dye sensitized solar cell

Al-Jawad, Selma M. H.; Salman, Odai N.; Yousif, Nwar A.

doi:10.1016/j.photonics.2018.06.010

Cited by 22 publications

(2 citation statements)

References 30 publications

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“…54 The lattice constants a and c and the main crystallite size ( Sheerer formula) of the CZTS films were calculated using the following equations respectively. [55][56][57][58]…”

Section: Dissolving the Source Of The Metals In Watermentioning

confidence: 99%

Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

Allawi,

Al-Jawad

2023

ECS J. Solid State Sci. Technol.

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Herein, the first paper for preparing Cu2ZnSnS4 film using EDTA as a complex agent by one-step hydrothermal method. The efficient Molybdenum oxide (MoO3) layer was also grown by the same step as preparing the Cu2ZnSnS4 film. The effects of different copper concentrations on the structural, optical, and electrical properties were studied. X-ray diffraction and Raman analyses confirmed the formation of polycrystalline kesterite phase Cu2ZnSnS4 films with preferred orientation along (112) plane and showed that structure property alters with copper concentration: at lower copper concentration single kesterite phase Cu2ZnSnS4 was formed, while with increasing copper concentration kesterite Cu2ZnSnS4 and secondary phases were formed. Field emission scanning electron microscopy revealed a mixture of micro-flower and a thin network of nanoflakes morphology. In addition, it showed as copper concentration changes the grain size of micro-flower and thickness of flakes change. UV-visible analysis showed high and broad absorbance spectra with high absorption coefficient values of more than 104 cm−1 in visible and infrared regions.also, predicted the band gap of single-phase Cu2ZnSnS4 film equal to 1.4 eV. Photoluminescence analysis demonstrated a single emission peak located at 1.55 eV which is quite near to the band gap of kesterite Cu2ZnSnS4. Hall measurement showed the single phase sample is a p-type semiconductor with a resistivity of 5 Ω cm, a charge carrier concentration of 7.5 × 1016 cm−3 and mobility of 16 cm2 Vs−1. Finally, a heterojunction solar cell was made with Mo foil/MoO3/CZTS/Zn0.35Cd0.65S/ZnO/Al configuration. A photovoltaic conversion efficiency of (2.17%) was attained under 100 mW cm−2 with an open-circuit voltage of (0.432) V, short-circuit current density of (13.4) mA cm−2 and a fill factor of (37.5%).

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“…54 The lattice constants a and c and the main crystallite size ( Sheerer formula) of the CZTS films were calculated using the following equations respectively. [55][56][57][58]…”

Section: Dissolving the Source Of The Metals In Watermentioning

confidence: 99%

Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

Allawi,

Al-Jawad

2023

ECS J. Solid State Sci. Technol.

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“…The optical properties of CdS thin films were investigated using a UV spectrometer across a wavelength range of 200 to 1100 nm, as shown in the visible range; these 4 percent Mn-CdS films are substantially more transparent than pure CdS films as seen. The absorption coefficient (α) was computed utilizing the formula [25]:…”

Section: Optical Properties 431 Uv-vismentioning

confidence: 99%

Structural, Optical and Morphological Properties Cadmium Sulfide Thin Films Prepared by Hydrothermal Method

Aboud¹,

Imran²,

Al-Jawad³

2021

JASN

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In this research, pure and 4%, Mn-doped thin films of cadmium sulfide (CdS) were synthesized using a 2-hour hydrothermal process. The effect of adding the dopant concentration on the samples' structural, morphological, and optical characteristics were investigated. The ultraviolet-visible-NIR spectrophotometer was used to investigate the optical properties. UV-Vis experiments lowered the optical bandgap with an add Mn percentage. Their optical bandgap was 2.38 eV for undoped thin films and 1.81 eV for 4% doped Mn-CdS thin films. UV-Vis spectroscopy data are in agreement with PL. FE-SEM imaging revealed morphological changes caused by the inclusion of Mn in CdS thin films. FE-SEM displays images of undoped CdS, which appear to be Nanoparticles. Morphology of the thin films has shown that the average grain size increases by the agglomeration of Nano-grains, which become clusters of particles after Mn +2 incorporation. In addition, The XRD pattern revealed that prepared samples H (002)/C (111) as hexagonal and cube phases have a preferential orientation. The increase in the main diffraction peak (002) intensity with increasing Mn concentration revealed the substitution of Mn +2 with Cd +2 in the lattice. The crystallite size increased from10.74 to 11.67 nm with an Mn percentage.

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Cauliflower Cu2ZnSnS4:Na film prepared by single-pot hydrothermal approach for photovoltaic application: impact of NaOH additive

Allawi,

Al-Jawad

2024

J Appl Electrochem

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Influence of titanium tetrachloride concentration and multiple growth cycles of TiO2 nanorod on photoanode performance in dye sensitized solar cell

Cited by 22 publications

References 30 publications

Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

Toward Phase Pure CZTS Film-Based Solar Cell Prepared by the One-Step Hydrothermal Method: Influence of Copper Concentration

Structural, Optical and Morphological Properties Cadmium Sulfide Thin Films Prepared by Hydrothermal Method

Cauliflower Cu2ZnSnS4:Na film prepared by single-pot hydrothermal approach for photovoltaic application: impact of NaOH additive

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