Numerical investigation of the Cu2O solar cell with double electron transport layers and a hole transport layer

Sun, Bin; Chen, Hao; Yan, Kang; Feng, Xiaodong

doi:10.1016/j.optmat.2022.112642

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…The fill factors of the devices were calculated to be 0.57, 0.29, and 0.31, respectively, which may be attributed to the decrease in grain size and the increase in scattering defects such as grain boundaries, as observed in the FE-SEM images. Owing to the cliff-type band alignment generated at the heterointerface between the Cu 2 O and ZnO layers, the photovoltaic performances including the conversion efficiency and open-circuit voltage of the Cu 2 O heterojunction photovoltaic devices are generally significantly influenced by the presence of a wide-band gap buffer layer. − Neither the Cu 2 O nor the Al:Cu 2 O photovoltaic devices included any buffer layer, a component that is essential for performance enhancement; consequently, the observed results were considered explicable.…”

Section: Resultsmentioning

confidence: 99%

Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Hashimoto,

Mohammad Zain,

Muraoka

et al. 2024

ACS Appl. Energy Mater.

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N-type Al:Cu 2 O semiconductor layers were prepared via cathodic electrodepositions from a copper(II)-lactate complex aqueous solution with added aluminum chloride. Subsequently, the Al:Cu 2 O/n-ZnO heterojunction and p-Cu 2 O/ n-Al:Cu 2 O homojunction photovoltaic devices were constructed by using sequential electrodeposition. The effects of Al impurity were investigated by examining the structural, optical, and semiconductor characteristics of the Cu 2 O layer using XRD, FE-SEM, XPS, and UV−vis analyses and electrochemical measurements of Mott−Schottky plots. Photovoltaic characteristics were then assessed through current density−voltage curves under AM 1.5G illumination and external quantum efficiency (EQE) for both Cu 2 O/ZnO heterojunction and p-Cu 2 O/n-Al:Cu 2 O homojunction devices. The introduction of Al impurities induced a change in the semiconductor type from intrinsic p-type Cu 2 O to n-type and decreased carrier concentration while keeping the characteristic cubic lattice. A slight increase in the band gap energy of the Cu 2 O layers from 2.00 to 2.08 eV was noted with an increase in Al impurity content. The maximum value of the EQE evaluated for the heterojunction photovoltaic devices composed of Cu 2 O, Al:Cu 2 O, and n-ZnO semiconductor layers decreased with an increase in Al impurity content. However, the EQE at wavelengths ranging from approximately 630 to 500 nm was enhanced by Al impurity introduction, although the optical absorption characteristics were almost the same in absorption coefficient and dependence on the wavelength, irrespective of the Al content. The enhancement was attributed to an increase in internal quantum efficiency originating from the accelerating dissociation of excitons to free carrier generation for the yellow and green exciton series due to the introduced Al impurities. An EQE of 28% was achieved in the p-Cu 2 O/n-Al:Cu 2 O homojunction photovoltaic device, along with enhancements in the EQE values at wavelengths ranging from 630 to 500 nm, showing that both the p-Cu 2 O and n-Al:Cu 2 O layers functioned as photovoltaic layers, as evidenced by their external quantum efficiency feature.

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Section: Resultsmentioning

confidence: 99%

Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Hashimoto,

Mohammad Zain,

Muraoka

et al. 2024

ACS Appl. Energy Mater.

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“…The primary raw material used is copper, which is widely available in nature, has a low cost, and is a simple, inexpensive material manufacturing process. These advantages make the material Cu 2 O have potential applications in various fields: photovoltaics, [25][26] photocatalysts, [27][28][29][30][31][32] gas sensors, [33][34][35] high-performance solar cells, [36][37][38] etc. Cu 2 O has been synthesized by several methods, such as hydrothermal, 39 thermal decomposition, 39 wet precipitation 40 , electrochemical, 41 etc.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Cu<sub>2</sub>O Nanoparticles and Their Application for the Photodegradation of Methyl Orange in Aqueous Media

Nam Ho

2024

Fine Chemical Engineering

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The existence of colorants in water has caused many disadvantages to aquatic systems and the environment. Scientists have made efforts to decompose and remove them using many different methods. In this study, Cu2O nanoparticles were synthesized with a mixture of reducing agents, including glucose and ascorbic acid, as a photocatalyst for decomposing azo dyes. The prepared nano Cu2O was fully characterized using scanning electron microscope (SEM) imaging, X-ray diffraction (XRD) diffraction measurements, and band gap energy determination. The obtained nano Cu2O was of a uniform truncated block shape with particle size ranging from 50 to 150 nm. The prepared nano Cu2O showed remarkable photocatalytic behavior toward methyl orange under visible light radiation with the removal percentage of 95.46% after 4 hours of reaction. In addition, the catalyst can be reused many times without much impact on catalytic efficiency. Photocatalytic degradation using Cu2O nanoparticles is a promising method for the removal of methyl orange, contributing to creating a safe and sustainable environment.

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Terminalia catappa leaf extract as a bio-reducing agent to synthesize Cu2O nanoparticles for methylene blue photodegradation

Nguyen,

Nguyen

et al. 2024

Discov Appl Sci

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The large tree species Terminalia catappa is a member of the Combretaceae family and is mainly found in tropical climates. They are commonly cultivated for shade because they have huge, dense foliage. Numerous polyphenols, including flavonoids, tannins, saponins, and phytosterols, are present in the leaves. In this study, the green chemical method was used to extract polyphenols from dried green almond leaves. They were employed in the synthesis of Cu2O nanoparticles as a reducing agent. FTIR and UV–Vis were used to describe the leaf extract of Terminalia catappa after the chlorophyll was removed. Copper salt was used to create Cu2O nanoparticles via a reduction process. The extract's potential for photocatalytic dye degradation has also been explored. The obtained Cu2O had a spherical shape with dimensions of 50–100 nm, and its band gap energy reached 1.945 eV to remove methylene blue from aqueous media under visible light irradiation conditions. At an initial MB concentration of 10 ppm, the decomposition efficiency reached 71.99% after only 2 h of exposure to simulated sunlight. The decomposition process occurred according to a pseudo-first-order kinetic model with a rate constant of 0.0084 min−1.

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Numerical investigation of the Cu2O solar cell with double electron transport layers and a hole transport layer

Cited by 6 publications

References 39 publications

Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Green Synthesis of Cu<sub>2</sub>O Nanoparticles and Their Application for the Photodegradation of Methyl Orange in Aqueous Media

Terminalia catappa leaf extract as a bio-reducing agent to synthesize Cu2O nanoparticles for methylene blue photodegradation

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Numerical investigation of the Cu2O solar cell with double electron transport layers and a hole transport layer

Cited by 6 publications

References 39 publications

Al:Cu2O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Al:Cu2O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Green Synthesis of Cu<sub>2</sub>O Nanoparticles and Their Application for the Photodegradation of Methyl Orange in Aqueous Media

Terminalia catappa leaf extract as a bio-reducing agent to synthesize Cu2O nanoparticles for methylene blue photodegradation

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Product

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Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices

Al:Cu₂O n-Type Semiconductors─Electrochemical Fabrication of Heterojunction and Homojunction Photovoltaic Devices