Electric field engineering and modulation of CuBr: a potential material for optoelectronic device applications

Arif, Suneela

doi:10.1039/d3ra00157a

Cited by 1 publication

(1 citation statement)

References 46 publications

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“…[49] As shown in Figure 10e, for CuBr, the Fermi energy level is positioned at the DOS near zero, suggesting that CuBr is semiconducting but metallic. [50] The VB of CuBr is mainly contributed by Cu d and Br i, while the CB is mainly contributed by Cu s. Figure 10f displays the density of states for NENU-5. The DOS of NENU-5 is not zero at the Fermi energy level revealing metallic conducting properties.…”

Section: Dft and Ups Calculationsmentioning

confidence: 99%

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

Kong,

Wang,

Jin

2024

Solar RRL

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Graphdiyne (GDY) has been widely applied in the field of photocatalytic hydrogen production due to its unique chemical structure and excellent photoelectric performance. In this study, CuBr was used as a catalytic substrate to prepare CuBr/GDY through a cross‐coupling reaction, and a novel NENU‐5/CuBr/GDY tandem S‐scheme heterojunction photocatalyst was constructed at low temperature. The NENU‐5/CuBr/GDY heterojunction exhibited significantly enhanced activity in photocatalytic hydrogen evolution, with hydrogen evolution reaching 226.62 μmol in 5 h, which was 4.7 and 12.6 times greater than that of pure GDY and NENU‐5, respectively. Comprehensive evaluation of electrochemical, photoluminescence, and time‐resolved photoluminescence indicated that the enhanced activity of the NENU‐5/CuBr/GDY composite catalyst was attributed to high photocurrent response and low electrical resistance, which increased the efficiency of photogenerated charge separation. Additionally, density functional theory (DFT) calculations and work function proposed the possibility of constructing the NENU‐5/CuBr/GDY tandem S‐scheme heterojunction structure. In summary, this work provides valuable ideas into tandem heterojunctions for photocatalytic hydrogen production.This article is protected by copyright. All rights reserved.

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Section: Dft and Ups Calculationsmentioning

confidence: 99%

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

Kong,

Wang,

Jin

2024

Solar RRL

View full text Add to dashboard Cite

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Electric field engineering and modulation of CuBr: a potential material for optoelectronic device applications

Abstract: I–VII semiconductors are promising candidates for the solid-state optoelectronics may be engineered/tailored by manipulating electronic bandgaps.

Cited by 1 publication

References 46 publications

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

Preparation and Photocatalytic Hydrogen Evolution Performance Study of NENU‐5/CuBr/Graphdiyne Tandem S‐Scheme Heterojunction

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