Studies on SILAR deposited Cu2O and ZnO films for solar cell applications

A perfect crystalline phases of cuprous oxide were synthesized using electrochemical method at different duration ( 15, 30 and 60 min). The deposited samples were examined by XRD, SEM, UV-Vis absorption and Mott-Schottky measurements. The effect of the deposition time on the optical and dielectric properties of Cu 2 O was studied in detail. The x-ray diffraction indicated increasing of crystallinity and crystallite size with increasing of deposition time. SEM micrographs exhibited grains with three-faced pyramid shape and grains size increased with improvement of crystallinity. Optical study is performed to calculate optical band gap (E g ), absorption coefficient (α), extinction coefficient (k), refractive index (n), dielectric constants (ε), urbach energy (E U ) and optical conductivity (σ opt ) using the transmittance and absorption spectra in the wavelength range of 400-1100 nm. Among all grown samples, the film deposited at 60 min shows interesting optical and dielectric properties. The Mott-Schottky analysis shows that the film deposited at 60 min has a low carrier density compared to samples deposited in other deposition times.

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“…The dislocation density (δ), defined as the length of dislocation lines per unit volume, was evaluated from the formula (equation (4)) [24]:…”

Section: Structural Characterizationmentioning

confidence: 99%

Optical and dielectric properties of electrochemically deposited p-Cu₂O films

Hssi

Atourki

Labchir

et al. 2020

Mater. Res. Express

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“…the deposition had more crystalline particles. Average value of CZTS thin film crystallite size can be obtained from Debye -Scherrer's equation given in Equation 1 [43,44].…”

Section: Xrd Analysismentioning

confidence: 99%

Single step electrochemical deposition for the fabrication of CZTS kesterite thin films for solar cells

Khattak

Baig

Toura

et al. 2019

Applied Surface Science

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Section: Number Of Cycles During Depositionmentioning

confidence: 99%

“…In almost all studies, the number of cycles is generally kept constant to understand the other properties of the Cu x O films. There are few investigations where the effect of the number of cycles on the fabrication of Cu x O films 106–110 is discussed, as summarized in Table 7. It is obvious that with the increase of immersion cycles thickness of the films increase.…”

Section: Factors Affecting Silar Deposition Processmentioning

confidence: 99%

“…The samples deposited by 75 and 100 cycles have comparatively better crystallite size and lower dislocation density, which leads to reduce grain boundaries. 106 Due to the drop in grain boundary resistance, the photogenerated charge carriers can significantly reduce the recombination losses. The cell was fabricated as ITO/ZnO NRs/Cu 2 O/Al with varied efficiency mainly due to the number of cycles of the films shown in Fig.…”

Section: Factors Affecting Silar Deposition Processmentioning

confidence: 99%

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