Photoelectrochemical properties of WO3 films prepared by hydrothermal synthesis

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-03 DOI:10.1016/j.jphotochem.2024.116251

Mohamed H. Sayed , Mohammed M. Gomaa , Tomáš Imrich , Roman Nebel , Michael Neumann-Spallart , Josef Krýsa , Hana Krýsová , Mostafa Boshta

{"title":"Photoelectrochemical properties of WO3 films prepared by hydrothermal synthesis","authors":"Mohamed H. Sayed , Mohammed M. Gomaa , Tomáš Imrich , Roman Nebel , Michael Neumann-Spallart , Josef Krýsa , Hana Krýsová , Mostafa Boshta","doi":"10.1016/j.jphotochem.2024.116251","DOIUrl":null,"url":null,"abstract":"<div><div>WO3 thin films were synthesized on FTO (fluorine doped SnO2 on glass) by the hydrothermal method at 180 °C using different deposition times and subsequently annealed at 350 °C and 550 °C in air. The results of XRD and Raman showed complete phase transformation from WO3 hydrate into γ-monoclinic WO3 after annealing at 550 °C. SEM analysis showed significant effects of deposition time and annealing on the surface morphology of the WO3 thin films. WO3 films were examined by the Scotch tape test and showed superior adhesion for samples synthetized for 2 h compared with samples synthesized for 15 h. The photoelectrochemical properties of the WO3 samples were measured. The highest photocurrent density of ∼1.9 mA/cm2 (E = 1.4 V vs. Ag/AgCl, 369 nm LED, irradiance 100 W/m2), IPCE = 0.69 at 369 nm, and 2 mA/cm2 under simulated solar irradiation (AM1.5) was achieved for a layer thickness of 3.5 μm.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"463 ","pages":"Article 116251"},"PeriodicalIF":4.1000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry and Photobiology A-chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1010603024007950","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

WO₃ thin films were synthesized on FTO (fluorine doped SnO₂ on glass) by the hydrothermal method at 180 °C using different deposition times and subsequently annealed at 350 °C and 550 °C in air. The results of XRD and Raman showed complete phase transformation from WO₃ hydrate into γ-monoclinic WO₃ after annealing at 550 °C. SEM analysis showed significant effects of deposition time and annealing on the surface morphology of the WO₃ thin films. WO₃ films were examined by the Scotch tape test and showed superior adhesion for samples synthetized for 2 h compared with samples synthesized for 15 h. The photoelectrochemical properties of the WO₃ samples were measured. The highest photocurrent density of ∼1.9 mA/cm² (E = 1.4 V vs. Ag/AgCl, 369 nm LED, irradiance 100 W/m²), IPCE = 0.69 at 369 nm, and 2 mA/cm² under simulated solar irradiation (AM1.5) was achieved for a layer thickness of 3.5 μm.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.