Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications
Electrochromic (EC) materials allow for dynamic tuning of optical properties via an applied electric field, presenting great potential in energy-efficient technologies, such as smart windows for effective light and temperature regulation. The precise control of precursor concentration has proven to...
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MDPI AG
2024-10-01
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| Series: | Crystals |
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| author | Pritam J. Morankar Rutuja U. Amate Namita A. Ahir Chan-Wook Jeon |
| author_facet | Pritam J. Morankar Rutuja U. Amate Namita A. Ahir Chan-Wook Jeon |
| author_sort | Pritam J. Morankar |
| collection | DOAJ |
| description | Electrochromic (EC) materials allow for dynamic tuning of optical properties via an applied electric field, presenting great potential in energy-efficient technologies, such as smart windows for effective light and temperature regulation. The precise control of precursor concentration has proven to be a powerful approach in tailoring the physicochemical properties of semiconducting metal oxides. In this study, we employed a one-step electrodeposition technique to fabricate tungsten oxide (WO<sub>3</sub>) thin films, systematically exploring how varying precursor concentrations influence the material’s characteristics. X-ray diffraction analysis revealed significant changes in diffraction patterns, reflecting subtle structural modifications due to concentration variations. Additionally, scanning electron microscopy revealed significant changes in the microstructure, showing a progression from small nanogranules to larger agglomerations within the film matrix. The W-25 mM thin film delivered exceptional EC performance, efficiently accommodating lithium ions while showcasing superior EC properties. The optimized electrode, denoted as W-25 mM, showcased exceptional EC metrics, featuring the highest optical modulation at 82.66%, outstanding reversibility at 99%, and a notably high coloring efficiency of 83.01 cm<sup>2</sup>/C. These findings emphasize the importance of precursor concentration optimization in enhancing the EC properties of WO<sub>3</sub> thin films, contributing to the advancement of high-performance, energy-efficient materials. |
| format | Article |
| id | doaj-art-40f0a05b8f8a402d99fe29a2e508b1ff |
| institution | Kabale University |
| issn | 2073-4352 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj-art-40f0a05b8f8a402d99fe29a2e508b1ff2024-11-26T17:58:28ZengMDPI AGCrystals2073-43522024-10-01141191510.3390/cryst14110915Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration ModificationsPritam J. Morankar0Rutuja U. Amate1Namita A. Ahir2Chan-Wook Jeon3School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of KoreaSchool of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Republic of KoreaElectrochromic (EC) materials allow for dynamic tuning of optical properties via an applied electric field, presenting great potential in energy-efficient technologies, such as smart windows for effective light and temperature regulation. The precise control of precursor concentration has proven to be a powerful approach in tailoring the physicochemical properties of semiconducting metal oxides. In this study, we employed a one-step electrodeposition technique to fabricate tungsten oxide (WO<sub>3</sub>) thin films, systematically exploring how varying precursor concentrations influence the material’s characteristics. X-ray diffraction analysis revealed significant changes in diffraction patterns, reflecting subtle structural modifications due to concentration variations. Additionally, scanning electron microscopy revealed significant changes in the microstructure, showing a progression from small nanogranules to larger agglomerations within the film matrix. The W-25 mM thin film delivered exceptional EC performance, efficiently accommodating lithium ions while showcasing superior EC properties. The optimized electrode, denoted as W-25 mM, showcased exceptional EC metrics, featuring the highest optical modulation at 82.66%, outstanding reversibility at 99%, and a notably high coloring efficiency of 83.01 cm<sup>2</sup>/C. These findings emphasize the importance of precursor concentration optimization in enhancing the EC properties of WO<sub>3</sub> thin films, contributing to the advancement of high-performance, energy-efficient materials.https://www.mdpi.com/2073-4352/14/11/915thin filmtungsten oxideelectrodepositionconcentration variationsnanogranuleselectrochromism |
| spellingShingle | Pritam J. Morankar Rutuja U. Amate Namita A. Ahir Chan-Wook Jeon Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications Crystals thin film tungsten oxide electrodeposition concentration variations nanogranules electrochromism |
| title | Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications |
| title_full | Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications |
| title_fullStr | Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications |
| title_full_unstemmed | Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications |
| title_short | Revealing Enhanced Optical Modulation and Coloration Efficiency in Nanogranular WO<sub>3</sub> Thin Films Through Precursor Concentration Modifications |
| title_sort | revealing enhanced optical modulation and coloration efficiency in nanogranular wo sub 3 sub thin films through precursor concentration modifications |
| topic | thin film tungsten oxide electrodeposition concentration variations nanogranules electrochromism |
| url | https://www.mdpi.com/2073-4352/14/11/915 |
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