Optical and structural characterization of aluminium doped zinc oxide thin films prepared by thermal evaporation system

Abdulmunem, Oday Mazin; Ali, Mohammed J. Mohammed; Hassan, Ehssan S.

doi:10.1016/j.optmat.2020.110374

Cited by 26 publications

(10 citation statements)

References 37 publications

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“…The corresponding C-V and 1/C 2 plot with varying temperatures is shown in figure 7. As depicted in figure 8 the V oc is decreasing with an increase in temperature from 1.08 V to 0.93 V for 300 K to 400 K respectively [20,21]. This is due to the increase in the reverse saturation current, while J sc increases slightly as shown from 27.94 to 27.96 mA cm −2 for 300 K to 400 K. At higher temperatures, it is known that thermal expansion can alter the interatomic distances of the crystal lattice and the electron-phonon interaction, thus reducing the bandgap (narrow bandgap) and affecting the short-circuit current (J SC ) which leads to more electron-hole pairs generation.…”

Section: Impact Of Temperature On Cell Performancementioning

confidence: 89%

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Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

Dakua¹,

Panda

2023

Phys. Scr.

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With a high absorption coefficient and tunable bandgap CZTS (Copper Zinc Tin Sulfide) makes it suitable for photovoltaic applications. Present paper deals with the simulation and modeling of CZTS-based solar cells using tungsten disulfide (WS2) as the buffer layer and CZTS2 as the back surface field (BSF) layer to study the performance of the solar cell. Considering different physical and geometrical parameters such as thickness, acceptor density, interfacial defect density, and metal contact work functions the device calibration has been done. The temperature is varied from 300 K to 400 k to study the impact on device performance. The C-V and 1/C2 plot is presented to calculate the built-in voltage for the device. The series (Rs) and shunt (Rsh) resistance of 1 and 106 ohm.cm2 were kept throughout the simulation. The optimized thickness for the absorber, BSF, buffer, and window layers are 800 nm, 140 nm, 30 nm, and 90 nm respectively. The obtained results are validated using the experimental results available in the literature. Varying the values of different parameters, the optimal efficiency of 26 % was reported in this work. Contrary to conventional solar cells, which contain expensive and toxic elements, WS2 may be a good option as a buffer layer in CZTS solar cells.

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Section: Impact Of Temperature On Cell Performancementioning

confidence: 89%

“…Back contact metal-work function and its impact on the device In this study, the work function of the back contact is tuned from 5 eV to 5.7 eV[21][22][23][24][25] and the corresponding cell performance is presented in figure 9. From the figure, it is evident that the efficiency increases with an increase in the back contact metal work function.…”

mentioning

confidence: 99%

Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

Dakua¹,

Panda

2023

Phys. Scr.

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“…ZnO has high chemical and thermal stability. It is also transparent to visible light 7,9,10 , has high conductivity 2.7 (S.cm -1 ) 11 at 25℃, and exhibits piezoelectric and pyroelectric properties. The properties of ZnO are highly dependent on the specific growth conditions 9,11 .…”

Section: Introductionmentioning

confidence: 99%

انماء تراكيب نانوية من أكسيد الزنك بطريقة التحلل المائي الحراري لقيم مختلفة من درجة الحامضية

Abbas,

Hassan,

Abdulmunem

2024

Baghdad Sci.J

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Flower- and rod-like nanostructures of zinc oxide were prepared by the hydrothermal method at 90°C for three hours. Three 0.028 molar solutions, with pH values of 9, 10, and 11, were deposited on glass substrate/ZnO seed layers. All the prepared samples had a polycrystalline diffraction pattern with dominant diffraction from the (002) plane. With increasing pH, the crystallite size increased to a maximum of 37.6 nm. The importance of the research lies in the growth of different nanostructures of zinc oxide by controlling the degree of pH, as the results showed the emergence of flower structures ZnO NFs at pH 11 with a particle size of 100-800 nm, and the development of nanostructures in the form of a bundle of rods at pH 10 with a particle size of 500-800 nm and the development of ZnO NRs in the form of solitary rods perpendicular to the surface at pH 9, with a grain size of 70-80 nm. The optical properties showed a decrease from 78.75% to 79.32% as the pH was increased from 9 to 11, and the value of the energy gap increased from 3.18 eV to 3.31 eV with the increase in the pH value from 9 to 11.

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“…The ZnO thin films can be easily nanostructured by different techniques like magnetron sputtering, [ 11 ] thermal evaporation, [ 12 ] sol‐gel, [ 13 ] chemical vapor deposition (CVD), [ 14 ] hydrothermal, [ 15 ] and spray pyrolysis technique, used in this work due to its simplicity, low cost and non‐vacuum deposition method allowing the reproducibility of reliable and uniform films of metal, oxide, and semiconductor. [ 16 ]…”

Section: Introductionmentioning

confidence: 99%

“…[8] However, recombination can be relatively avoided by separating, trapping, and transferring charges to intermediate energy levels as structural and surface defects. [9,10] The ZnO thin films can be easily nanostructured by different techniques like magnetron sputtering, [11] thermal evaporation, [12] sol-gel, [13] chemical vapor deposition (CVD), [14] hydrothermal, [15] and spray pyrolysis technique, used in this work due to its simplicity, low cost and non-vacuum deposition method allowing the reproducibility of reliable and uniform films of metal, oxide, and semiconductor. [16] In this study, the modification of physical properties by varying the deposition temperature was targeted to enhance the photodegradation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deposition Temperature on Morphological, Optical, and Photocatalytic Properties of ZnO Thin Films Synthesized by Ultrasonic Spray Pyrolysis Method

Ouhaibi

Saoula

Ghamnia

et al. 2022

Crystal Research and Technology

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ZnO thin films are synthesized by an ultrasonic spray pyrolysis method, with the deposition temperature in a range between 250–450 °C. The obtained thin films are analyzed by X‐ray diffraction (XRD), atomic force microscopy (AFM), and photoluminescence (PL). The samples are used in a photocatalytic experiment to compare the degradation efficiency by methylene blue decomposition under UV irradiation. XRD patterns confirm a polycristalline wurtzite structure with preferred orientation along the (002) plane. AFM images reveal an important change in the shape and size of the grains constituting the surface. The roughness values are in the range of 17–93 nm. Thickness values of thin films deposited at 250, 350, and 450 °C are ≈0.9, 2.3, and 1.4 µ, respectively. From PL characterization, the spectra are found to be sensitive to the deposition temperature, where emission peaks with different forms and intensities are observed. One peak at 389 nm is attributed to the recombination of free excitons, and other peaks between 403–522 nm correspond to violet, blue, and green emissions indicating the presence of Zn vacancies, Zn interstitials, and oxygen vacancies, respectively, in the ZnO structure. The photocatlytic results show that the best photocatalytic efficiency of 88% is achieved by ZnO thin film deposited at 450 °C.

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Optical and structural characterization of aluminium doped zinc oxide thin films prepared by thermal evaporation system

Cited by 26 publications

References 37 publications

Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

انماء تراكيب نانوية من أكسيد الزنك بطريقة التحلل المائي الحراري لقيم مختلفة من درجة الحامضية

Effect of Deposition Temperature on Morphological, Optical, and Photocatalytic Properties of ZnO Thin Films Synthesized by Ultrasonic Spray Pyrolysis Method

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Optical and structural characterization of aluminium doped zinc oxide thin films prepared by thermal evaporation system

Cited by 26 publications

References 37 publications

Improving the efficiency of ZnO/WS2/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

Improving the efficiency of ZnO/WS2/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

انماء تراكيب نانوية من أكسيد الزنك بطريقة التحلل المائي الحراري لقيم مختلفة من درجة الحامضية

Effect of Deposition Temperature on Morphological, Optical, and Photocatalytic Properties of ZnO Thin Films Synthesized by Ultrasonic Spray Pyrolysis Method

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Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation

Improving the efficiency of ZnO/WS₂/CZTS1 solar cells using CZTS2 as BSF layer by SCAPS-1D numerical simulation