Novel Sb2S3-xSex photocathode decorated NiFe-LDH hole blocking layer with enhanced photoelectrochemical performance

Zhang, Liyuan; Chang, Xin; Jin, Wei; Sun, Qian; Wang, Yishan; Wang, Jiawei; Hu, Xiaoyun; Miao, Hui

doi:10.1016/j.apsusc.2023.158184

Cited by 11 publications

(1 citation statement)

References 61 publications

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“…Clean energy has been highly demanded because it can fulfill our current desire to deal with environmental issues and nonrenewable fuel crises. − Hydrogen energy is a potential candidate due to its advantages of high energy density, high storage capacity, cleanliness, and environmental protection. − Photoelectrochemical (PEC) decomposition of water is a promising and effective way to convert solar energy to hydrogen energy. Various light-absorbing materials have been continuously studied − since the first demonstration of TiO 2 PEC water splitting in 1972 . However, the wide band gap semiconductors have weak absorption in the visible region, leading to poor PEC performance.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Li,

Jiang,

Wang

et al. 2024

Langmuir

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Antimony sulfide (Sb 2 S 3 ) has been recognized as a catalytic material for splitting water by solar energy because of its suitable narrow band gap, high absorption coefficient, and abundance of elements. However, many deep-level defects in Sb 2 S 3 result in a significant recombination of photoexcited electron−hole pairs, weakening its photoelectrochemical performance. Here, by using a simple hydrothermal and spin-coating method, we fabricated a step-scheme heterojunction of Sb 2 S 3 /α-Fe 2 O 3 to improve the photoelectrochemical performance of pure Sb 2 S 3 . Our Sb 2 S 3 /α-Fe 2 O 3 photoanode has a photocurrent density of 1.18 mA/cm 2 at 1.23 V vs reversible hydrogen electrode, 1.39 times higher than that of Sb 2 S 3 (0.84 mA/cm 2 ). In addition, our heterojunction has a lower onset potential, a higher absorbance intensity, a higher incident photon-to-current conversion efficiency, a higher applied bias photon-to-current efficiency, and a lower charge transfer resistance compared to pure Sb 2 S 3 . Based on ultraviolet photoelectron spectroscopy, we constructed a step-scheme band structure of Sb 2 S 3 /α-Fe 2 O 3 to explain its photoelectrochemical enhancement. This work offers a promising strategy to optimize the performance of Sb 2 S 3 photoelectrodes for solar-driven photoelectrochemical water splitting.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Li,

Jiang,

Wang

et al. 2024

Langmuir

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Unveiling the Dual Impact of CuI Layer and Se Content in Sb₂(S, Se)₃ Photocathodes for Solar Water Splitting

Chun,

Lie,

Ahmed

et al. 2024

Solar RRL

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Sb2(S, Se)3 is a promising photocathode for photoelectrochemical (PEC) conversion of solar energy to hydrogen due to its excellent optoelectronic properties, stability, and low toxicity. For such applications, a p–i–n device architecture is favorable for efficient charge separation, with the p‐type layer improving hole extraction while the n‐type layer facilitates electron injection into the electrolyte for hydrogen evolution reaction. However, the lack of suitable p‐type layers for depositing a uniform layer of Sb2(S, Se)3 photocathode constrains the device architectures for PEC water splitting. In this work, various p‐type materials (e.g., NiO, CuS, and CuI) are investigated. Photocathodes fabricated on CuI demonstrate superior performance due to improved hole extraction and uniform growth of Sb2(S, Se)3 absorber layer. The Se/S ratio is adjusted to further fine‐tune the photocathode's absorption, influencing the efficiency of charge carriers’ injection and separation. The overall PEC performance reaches the maximum value when Se/S = 20%, achieving up to 4.2 mA cm−2 with stable photocurrents sustained for 120 min under standard illumination conditions, achieving the highest‐reported photocurrent among S‐rich‐solution‐processed Sb2(S, Se)3 photocathodes. In this work, new avenues are opened for the design of p–i–n Sb2(S, Se)3 PEC devices.

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Emerging trends in water splitting innovations for solar hydrogen production: Analysis, comparison, and economical insights

Imran,

Hussain

2024

International Journal of Hydrogen Energy

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Novel Sb2S3-xSex photocathode decorated NiFe-LDH hole blocking layer with enhanced photoelectrochemical performance

Cited by 11 publications

References 61 publications

Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Unveiling the Dual Impact of CuI Layer and Se Content in Sb₂(S, Se)₃ Photocathodes for Solar Water Splitting

Emerging trends in water splitting innovations for solar hydrogen production: Analysis, comparison, and economical insights

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Novel Sb2S3-xSex photocathode decorated NiFe-LDH hole blocking layer with enhanced photoelectrochemical performance

Cited by 11 publications

References 61 publications

Fabrication of Flower-Shaped Sb2S3/Fe2O3 Heterostructures for Enhanced Photoelectrochemical Performance

Fabrication of Flower-Shaped Sb2S3/Fe2O3 Heterostructures for Enhanced Photoelectrochemical Performance

Unveiling the Dual Impact of CuI Layer and Se Content in Sb2(S, Se)3 Photocathodes for Solar Water Splitting

Emerging trends in water splitting innovations for solar hydrogen production: Analysis, comparison, and economical insights

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Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Fabrication of Flower-Shaped Sb₂S₃/Fe₂O₃ Heterostructures for Enhanced Photoelectrochemical Performance

Unveiling the Dual Impact of CuI Layer and Se Content in Sb₂(S, Se)₃ Photocathodes for Solar Water Splitting