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Dielectric-engineered Ag nanowire/dielectric multilayers composite transparent conductive thin films with exceeding 99% transmittance and enhanced stability.

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Title: Dielectric-engineered Ag nanowire/dielectric multilayers composite transparent conductive thin films with exceeding 99% transmittance and enhanced stability.
Authors: Yu, Shihui1 (AUTHOR) shihui.yu@tju.edu.cn, An, Wenxing2 (AUTHOR), Dong, Helei1,3 (AUTHOR) donghelei@nuc.edu.cn
Source: Ceramics International. May2026:Part A, Vol. 52 Issue 11, p15639-15647. 9p.
Subjects: Nanowires, Transparency (Optics), Nanocomposite materials, Electric conductivity, Durability, Transparent electronics, Optoelectronic devices, Dielectrics
Abstract: Flexible transparent conductive thin films (TCFs) are critical components in optoelectronic devices but are often limited by the trade-off between optical transparency, conductivity and stability. Herein, we report a dielectric-engineered Ag nanowire (Ag NW)/Nb 2 O 5 /SiO 2 /Nb 2 O 5 /SiO 2 (Ag NW/SNSN) composite TCF with ultra-high light transmittance. Guided by optical interference modeling, the four-layer SNSN dielectric stack is optimized to suppress reflection and absorption losses, causing a relative transmittance above 99% and a high figure of merit (∼1082), while the sheet resistance is 43.3 Ω/sq. Furthermore, the conductivity of composite TCFs does not show great change after tape test and ultrasonication, suggesting a strong adhesion of Ag NWs to the substrate. Moreover, the Ag NW/SNSN composite TCFs show a good stability to resist long-term storage, oxidation, sulfidation, and chloride corrosion. These results demonstrate that coupling dielectric interference design with nanoscale encapsulation enables TCFs operating near the theoretical transmittance limit of the substrate, offering a versatile strategy for flexible, durable, and high-performance optoelectronic devices. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
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Abstract:Flexible transparent conductive thin films (TCFs) are critical components in optoelectronic devices but are often limited by the trade-off between optical transparency, conductivity and stability. Herein, we report a dielectric-engineered Ag nanowire (Ag NW)/Nb 2 O 5 /SiO 2 /Nb 2 O 5 /SiO 2 (Ag NW/SNSN) composite TCF with ultra-high light transmittance. Guided by optical interference modeling, the four-layer SNSN dielectric stack is optimized to suppress reflection and absorption losses, causing a relative transmittance above 99% and a high figure of merit (∼1082), while the sheet resistance is 43.3 Ω/sq. Furthermore, the conductivity of composite TCFs does not show great change after tape test and ultrasonication, suggesting a strong adhesion of Ag NWs to the substrate. Moreover, the Ag NW/SNSN composite TCFs show a good stability to resist long-term storage, oxidation, sulfidation, and chloride corrosion. These results demonstrate that coupling dielectric interference design with nanoscale encapsulation enables TCFs operating near the theoretical transmittance limit of the substrate, offering a versatile strategy for flexible, durable, and high-performance optoelectronic devices. [ABSTRACT FROM AUTHOR]
ISSN:02728842
DOI:10.1016/j.ceramint.2026.02.166