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Kim H, Lee J, Kong H, Park T, Kim TS, Yang H, Yeo J. Laser-Printed Photoanode: Femtosecond Laser-Induced Crystalline Phase Transformation of WO 3 Nanorods for Space-Efficient and Flexible Thin-Film Solar Water-Splitting Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402051. [PMID: 38733227 DOI: 10.1002/smll.202402051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/02/2024] [Indexed: 05/13/2024]
Abstract
Despite its potential for clean hydrogen harvesting, photoelectrochemical (PEC) water-splitting cells face challenges in commercialization, particularly related its harvesting performance and productivity at an industrial scale. Herein, a facile fabrication method of flexible thin-film photoanode for PEC water-splitting to overcome these limitations, based on laser processing technologies, is proposed. Laser-induced graphene, a carbon structure produced through direct laser writing carbonization (DLWC), plays a dual role: a flexible and stable current collector and a substrate for the hydrothermal synthesis of tungsten trioxide (WO3) nanorods (NRs). To facilitate water-splitting, a femtosecond-pulsed laser (fs laser) is focused on the WO3 NRs, converting their crystalline phase from pristine orthorhombic to monoclinic structure without thermal damage. With NiFe layered double hydroxide (LDH) catalyst, the flexible thin-film photoanode exhibits good PEC performance (1.46 mA cm-2 at 1.23 VRHE) and retains ≈90% of its performance after 3000 bending cycles. With its excellent mechanical properties, the flexible photoanode can be operated in various shapes with different curvatures, enabling space-efficient PEC water-splitting by loading larger photoanode within a given space. This study is expected to contribute to the advancement of large-scale solar water-splitting cells, introducing a new approach to enhance H2/O2 production and expand its application range.
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Affiliation(s)
- Hyeonwoo Kim
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Jehoon Lee
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Heejung Kong
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Taeuk Park
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Tae Sung Kim
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Haechang Yang
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Junyeob Yeo
- Novel Applied Nano Optics Lab, Department of Physics, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
- Department of Hydrogen & Renewable Energy, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
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Choi B, Park GW, Jeong JR, Jeon N. Comparative Study of Thermal and Plasma-Enhanced Atomic Layer Deposition of Iron Oxide Using Bis( N,N'-di-butylacetamidinato)iron(II). NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1858. [PMID: 37368288 DOI: 10.3390/nano13121858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/07/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
Only a few iron precursors that can be used in the atomic layer deposition (ALD) of iron oxides have been examined thus far. This study aimed to compare the various properties of FeOx thin films deposited using thermal ALD and plasma-enhanced ALD (PEALD) and to evaluate the advantages and disadvantages of using bis(N,N'-di-butylacetamidinato)iron(II) as an Fe precursor in FeOx ALD. The PEALD of FeOx films using iron bisamidinate has not yet been reported. Compared with thermal ALD films, PEALD films exhibited improved properties in terms of surface roughness, film density, and crystallinity after they were annealed in air at 500 °C. The annealed films, which had thicknesses exceeding ~ 9 nm, exhibited hematite crystal structures. Additionally, the conformality of the ALD-grown films was examined using trench-structured wafers with different aspect ratios.
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Affiliation(s)
- Boyun Choi
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Gun-Woo Park
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jong-Ryul Jeong
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Nari Jeon
- Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
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Liu C, Wang Z, Zhang T, Zhang Y, Su J. Photo/thermal Dual‐Activation Improves the Photocurrent of Bismuth Vanadate for PEC Water Splitting. ChemElectroChem 2022. [DOI: 10.1002/celc.202200646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Cong Liu
- China Three Gorges Corporation Institute of Science and Technology CHINA
| | - Zhiqiang Wang
- Xi'an Jiaotong University International Research Center for Renewable Energy CHINA
| | - Tao Zhang
- Zhengzhou University of Aeronautics School of Materials Science and Engineering CHINA
| | - Yazhou Zhang
- Xi'an Jiaotong University International Research Center for Renewable Energy CHINA
| | - Jinzhan Su
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University 28# Xianning West RoadXi’an Jiaotong University 710049 Xi'an CHINA
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Parveh F, Yourdkhani A, Poursalehi R. Photoelectrochemical properties of single-grain hematite films grown by electric-field-assisted liquid phase deposition. Dalton Trans 2022; 51:17255-17262. [DOI: 10.1039/d2dt02475f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article reports a modification of the conventional liquid phase deposition (C-LPD) method for the single-grain deposition of α-Fe2O3 (hematite) films into an electric-field-assisted liquid phase deposition (EA-LPD).
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Affiliation(s)
- Fatemeh Parveh
- Materials Engineering Department, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
| | - Amin Yourdkhani
- Materials Engineering Department, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
| | - Reza Poursalehi
- Materials Engineering Department, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
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