期刊
APPLIED SURFACE SCIENCE
卷 510, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.145445
关键词
Silver nanowire; Single-walled carbon nanotubes; Transparent heater; Hybrid films; Thermal uniformity; Long-term stability
类别
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [NRF-2013R1A1A2010551, NRF-2016R1A2B4015276]
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government (MOTIE) [20164030201340]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20164030201340, 20184030202260] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Council of Science & Technology (NST), Republic of Korea [D010300] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [22A20130012822] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A flexible silver nanowire transparent heater (AgNW TH) was recently reported. However, the fabrication of AgNW THs that are durable over the long term is an important concern due to nanowire thermal instability. In this work, a thin AgNW film was coated with a dense single-walled carbon nanotube (SWCNT) film on glass and polyimide (PI) substrates. This simple hybrid heater was evaluated for heater performance and long-term working stability. The AgNW TH dried in air was unstable and failed more rapidly at elevated temperatures under Joule heating than that dried in vacuum. The AgNW TH had the same temperature limit irrespective of nanowire coating density due to the low melting point of AgNWs. The SWCNT/AgNW TH displayed a higher heating temperature and longer working stability than the AgNW TH. Based on thermoreflectance imaging and considering a power balance model, the improved thermal stability of the hybrid heater is attributed to thermal uniformity, in turn related to fast heat dissipation via heat transfer pathways of the dense SWCNT film, which delayed deformation and disconnection of the AgNWs. This simple hybrid structure could enhance the long-term working stability of AgNW-based THs in a wide range of practical applications.
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