The characteristics of IGZO/ZnO/Cu2O:Na thin film solar cells fabricated by DC magnetron sputtering method

Ke, Nguyen Huu; Loan, Phan Thi Kieu; Tuan, Dao Anh; Dat, Huynh Thanh; Tran, Cao Vinh; Hung, Le Vu Tuan

doi:10.1016/j.jphotochem.2017.09.016

Cited by 19 publications

(7 citation statements)

References 20 publications

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“…Additionally, the semiconductor band gap was determined to be 1.98 and 2.31 eV using UV–vis diffuse reflectance spectroscopy (Figure b), calculated from the straight-line fit of the linear regime of the Tauc plot (Figure c). These two optical band gaps can be assigned to the CuO and Cu 2 O, respectively, and agree with previous reports. ,, …”

Section: Resultssupporting

confidence: 92%

“…These two optical band gaps can be assigned to the CuO and Cu 2 O, respectively, and agree with previous reports. 7,60,61 The potential dependence of the photocurrent was further explored using linear sweep voltammetry. Figure 5a compares the current density observed in a CO 2 -saturated solution from the different electrodes (Ag dendrites and Ag/Cu 2 O/CuO dendrites) and from the Ag/Cu 2 O/CuO dendrite electrode under three different illumination conditions (light, dark, and chopped light conditions) (Figure 5b).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Landaeta

Masitas

Clarke

et al. 2020

ACS Appl. Nano Mater.

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The photoelectrocatalytic reduction of CO 2 uses sunlight to reduce the external energy needed to convert this greenhouse gas into value-added products. We report the deposition of a thin film of copper oxide onto a large-surface-area plasmonic silver structure, which generates an efficient photoelectrocatalyst for CO 2 reduction. Using incoherent visible light illumination and applying −0.4 V versus Ag/AgCl(KCl 1M), CO 2 was reduced to acetate with a faradaic efficiency of 54%. Rather than adding plasmonic nanoparticles as sensitizers onto semiconductors, here we electrodeposit a thin uniform layer of Cu 2 O/CuO over a plasmonic silver structure. The formation of acetate at this low potential has not been reported before and appears to arise from synergistic effects in this hybrid plasmonic-semiconductor material. In this work, we investigate changes in the photophysics under different preparation conditions. Varying the deposition time of Cu 2 O/CuO deposited onto the Ag to form the Ag/ Cu 2 O/CuO electrodes alters electron−hole recombination. The Ag/Cu 2 O/CuO electrodes show the highest photocurrent density when a minimal Cu 2 O/CuO film covers the Ag structure. Synergistic effects between the localized surface plasmon resonance of silver and semiconductor properties of Cu 2 O/CuO decrease the necessary overpotential required for CO 2 reduction, reduce charge recombination processes, and stabilize the Cu 2 O/ CuO semiconductor on the photoelectrode. The stabilization of Cu 2 O/CuO in the presence of energetic charge carriers is believed to be key to producing acetate with high efficiency. These properties suggest an interesting approach to photoelectrocatalytic materials.

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Section: Resultssupporting

confidence: 92%

Section: ■ Results and Discussionmentioning

confidence: 99%

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Landaeta

Masitas

Clarke

et al. 2020

ACS Appl. Nano Mater.

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“…Also, the electrical properties of the films (Table I) are very close to literature values. 48 As expected, n-type zinc oxide films have carrier concentration much higher and resistivity much lower than p-type Cu 2 O samples. 49…”

Section: Sample Preparationsupporting

confidence: 59%

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Boughelout

Macaluso

Crupi

et al. 2019

Journal of Elec Materi

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“…Oxide semiconductors are used in various applications, including flat-panel displays [ 1 , 2 ], optical sensors [ 3 , 4 ], and solar cells [ 5 , 6 ], owing to their excellent electrical and optical properties. Among them, the amorphous-InGaZnO (a-IGZO) thin-film transistors (TFTs) have attracted considerable attention for applications in flat-panel displays thanks to their high electrical performances [ 7 , 8 , 9 , 10 , 11 , 12 ] and manufacturability over a large area [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Conduction Band Edge Energy Profile Probed by Hall Offset Voltage in InGaZnO Thin Films

et al. 2020

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We measured and analyzed the Hall offset voltages in InGaZnO thin-film transistors. The Hall offset voltages were found to decrease monotonously as the electron densities increased. We attributed the magnitude of the offset voltage to the misalignment in the longitudinal distance between the probing points and the electron density to Fermi energy of the two-dimensional electron system, which was verified by the coincidence of the Hall voltage with the perpendicular magnetic field in the tilted magnetic field. From these results, we deduced the combined conduction band edge energy profiles from the Hall offset voltages with the electron density variations for three samples with different threshold voltages. The extracted combined conduction band edge varied by a few tens of meV over a longitudinal distance of a few tenths of µm. This result is in good agreement with the value obtained from the analysis of percolation conduction.

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The characteristics of IGZO/ZnO/Cu2O:Na thin film solar cells fabricated by DC magnetron sputtering method

Cited by 19 publications

References 20 publications

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Conduction Band Edge Energy Profile Probed by Hall Offset Voltage in InGaZnO Thin Films

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The characteristics of IGZO/ZnO/Cu2O:Na thin film solar cells fabricated by DC magnetron sputtering method

Cited by 19 publications

References 20 publications

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO2 Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO2 Reduction to Acetate at Low Overpotential

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Conduction Band Edge Energy Profile Probed by Hall Offset Voltage in InGaZnO Thin Films

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Product

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Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential

Copper-Oxide-Coated Silver Nanodendrites for Photoelectrocatalytic CO₂ Reduction to Acetate at Low Overpotential