Adapting the structural, optical and thermoelectrical properties of thermally annealed silver selenide (AgSe) thin films for improving the photovoltaic characteristics of the fabricated n-AgSe/p-CdTe solar cells

Qasem, Ammar; Alrafai, H. A.; Alshahrani, B.; Saïd, Nejla Mahjoub; Hassan, Abeer A.; Yakout, H.A.; Shaaban, E.R.

doi:10.1016/j.jallcom.2021.163374

Cited by 28 publications

(17 citation statements)

References 42 publications

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“…This thin film's bandgap energy makes it ideal for use as a window layer/buffer layer for solar cells. On the electrothermal side, the results confirmed that the AgSe thin layer had n-type conductivity [22].…”

Section: Introductionmentioning

confidence: 61%

“…The films had been evaporated in a nitrogen environment to avoid any oxidation of the film. On the other hand, the method of preparing the AgSe thin film used as a buffer layer was detailed in our recently published work [22].…”

Section: Methodsmentioning

confidence: 99%

“…Then, the crystal structures of thin layers at the different thicknesses were refined in terms of the Rietveld method [22]. The Rietveld refinement are present in Fig.…”

Section: Fig 2 X-ray Diffractograms Of the Different Thickness Of Cds...mentioning

confidence: 99%

“…As well, solar cells rely on a critical factor known as the "fill factor," which is described as the ratio of maximum attainable power to the ratio of open circuit voltage and short circuit current, as shown below [79,22]:…”

Section: Illuminated (I-v) and (P-v) Characteristics Of Fabricated De...mentioning

confidence: 99%

“…The thermally evaporated AgSe thin film's structural and optical characteristics were investigated in depth [22]. The optical bandgap for virgin thin films in this investigation was 1.94 eV.…”

Section: Introductionmentioning

confidence: 99%

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Studying the structural, optical spectroscopic ellipsometry and electrical properties of variable-CdS thickness/CdTe for solar cell applications

Sebak¹,

Ghalab²,

El-Taher³

et al. 2022

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"The structural and optical properties of CdS window layer at different thicknesses in the range of (100-300 nm) deposited on pre-cleaned glass substrates (CdS/glasses) via the thermal evaporation process are studied in the current work. The structural analysis is done using Rietveld refinement and atomic pressure microscope techniques. The films of CdS/glass showcase a wurtzite behavior. XRD and AFM tests are confirmed that the structural parameters improve as the thickness of the CdS-layer increases. The optical constants (the refractive index n, the extinction coefficient, k and the bandgap energy values are estimated from spectroscopic ellipsometry (SE) via the construction of an optical model. The refractive index of the CdS/glass films increases with the increase of CdS-layer thickness. This, in turn, is due to the rise of the size of the crystal in the thin layers. It is also found that as the thickness of the CdS-layer rises, so does the overall behavior of the extinction coefficient. Additionally, the bandgap energy of the direct transition decreases from 2.45 eV (d=100 nm) to 2.25 eV (d=300 nm). The dark and illumination I-V photovoltaic characteristics of fabricated devices are explored by depositing a p-CdTe thin layer (500 nm) over varying thicknesses of CdS thin films (100- 300 nm) prepared on glass substrates (2 mm) and thus, the Ni/n-CdS/i-AgSe/p-CdTe/Pt heterojunction has been successfully fabricated with an AgSe buffer layer deposited directly on the p-CdTe absorber laryer. The n-CdS window layer is deposited on i-AgSe buffer layer. In dark conditions, based on the dependence of the forward and reverse current-voltage, the essential behavior related to the fabricated diode has been determined. As well, in the illumination case, the open-circuit voltage, the short-circuit current, the fill factor, the power conversion efficiency, (PCE), photoresponsivity, quantum efficiency, dependence of generated photocurrent on the light intensity, dependence of the generated photocurrent on wavelength (λ)for the studied solar cell are computed and discussed."

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Section: Introductionmentioning

confidence: 61%

Section: Methodsmentioning

confidence: 99%

“…Then, the crystal structures of thin layers at the different thicknesses were refined in terms of the Rietveld method [22]. The Rietveld refinement are present in Fig.…”

Section: Fig 2 X-ray Diffractograms Of the Different Thickness Of Cds...mentioning

confidence: 99%

Section: Illuminated (I-v) and (P-v) Characteristics Of Fabricated De...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Studying the structural, optical spectroscopic ellipsometry and electrical properties of variable-CdS thickness/CdTe for solar cell applications

Sebak¹,

Ghalab²,

El-Taher³

et al. 2022

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Toward a novel and accurate relationship between electrical and optical conductivity in opto-material sciences: New strategy

Gomaa

Yahia

2022

J Comput Electron

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Comment on the relationship between electrical and optical conductivity used in several recent papers published in the journal of materials science: materials in electronics

Aly

2022

J Mater Sci: Mater Electron

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Adapting the structural, optical and thermoelectrical properties of thermally annealed silver selenide (AgSe) thin films for improving the photovoltaic characteristics of the fabricated n-AgSe/p-CdTe solar cells

Cited by 28 publications

References 42 publications

Studying the structural, optical spectroscopic ellipsometry and electrical properties of variable-CdS thickness/CdTe for solar cell applications

Studying the structural, optical spectroscopic ellipsometry and electrical properties of variable-CdS thickness/CdTe for solar cell applications

Toward a novel and accurate relationship between electrical and optical conductivity in opto-material sciences: New strategy

Comment on the relationship between electrical and optical conductivity used in several recent papers published in the journal of materials science: materials in electronics

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