Selective Void Deposition by Continuous, Ultrathin Ag Film Enabled Stable, High‐Performance AgNWs‐Based Transparent Heaters

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Sanh Vo Thi1,2, Thanh Tai Nguyen1,2, Malkeshkumar Patel1,2, P. K. Bhatnagar1,2, Chanhyuk Choi1,2, Junghyun Lee1,2, Vinh Ai Dao3,4, Joondong Kim1,4,2
1Department of Electrical Engineering, Incheon National University, 119 Academy Rd. Yeonsu, Incheon, 22012, Republic of Korea
2Photoelectric and Energy Device Application Lab (PEDAL), Multidisciplinary Core Institute for Future Energies (MCIFE), Incheon National University, 119 Academy Rd. Yeonsu, Incheon, 22012, Republic of Korea
3Department of Physics, Faculty of Applied Sciences, Ho Chi Minh City University of Technology and Education, Ho Chi Minh City, 700000 Viet Nam
4E-mails: [email protected] (J. KIm) and [email protected] (V.A. Dao)

Tóm tắt

AbstractMetallic nanowire‐based transparent conductors (MNTCs) are essential to various technologies, including displays, heat‐regulating windows, and photo‐communication. Hybrid configurations are primarily adopted to design stable, high‐functioning MNTCs. Although hybrid MNTCs enhance electrical performance, they often suffer from optical degradation due to losses associated with the hybrid layers. Highly conductive hybrid MNTCs with minimal reduction in transparency are achieved with AgNWs/Ag(O)/Al‐doped ZnO (AZO) design. The design provides a high visible light transmittance of 95.1%, representing a minimized optical loss of 3% compared to pristine AgNWs by optimizing optical interference between the AZO and Ag(O) layers. Furthermore, it allows for enhanced mobility of metallic nanowires by controlling the selective formation of conductive layers in the voids of the nanowire networks. The oxygen additive enables a continuous Ag ultrathin film of 6 nm in the macro‐voids of AgNWs system, corresponding to 25 times higher mobility for AgNWs/Ag(O)/AZO than that of sole AgNWs. The significant enhancement in the mobility of AgNWs/Ag(O)/AZO induces a reduction of sheet resistance of MNTCs by 73%. The AgNWs/Ag(O)/AZO, with an optimized sheet resistance of 24 Ω sq−1, is explored for transparent heater applications, demonstrating a fast thermal response with reliable stability, as evidenced by consistent high‐temperature profiles during prolonged operation.

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