Thermal Response of Transparent Silver Nanowire/PEDOT:PSS Film Heaters
Thermal Response of Transparent Silver Nanowire/PEDOT:PSS Film Heaters
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DOI：
10.1002/smll.201401690
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发表时间：
2014-12-10
期刊：
影响因子：
13.3
通讯作者：
Ye, Changhui
中科院分区：
文献类型：
--
作者：
Ji, Shulin;He, Weiwei;Ye, Changhui
研究了透明银纳米线/PEDOT：PSS薄膜加热器的热响应行为，以控制加热温度、响应时间和功耗。从热力学角度分析了衬底热容、空气与加热器之间的传热系数、方阻以及银纳米线薄膜的尺寸对热响应的影响。在其他参数一定的情况下，可以利用银纳米线覆盖率作为调整热响应的有效参数。传热系数对热响应速度和可达到的稳态温度起着相反的作用。通过瞬态过程分析，考虑加热器电阻的变化，对瞬态过程进行修正，得到近似为32 W m（-2）K-1的数值。通过在合适材料和一定厚度的衬底上形成具有合适方块电阻的银纳米线薄膜，为设计具有给定响应时间的加热器提供了指导。对所设计的Ag加热器进行了热响应测试，结果表明，与ITO/FTO加热器相比，Ag加热器具有更高的加热温度、更短的响应时间和更低的功耗（179 ℃ cm（2）W-1），以及均匀的温度分布和重复使用的稳定性。银加热器在窗户除雾、传感和热致变色等方面具有潜在的应用前景。
Thermal response behavior of transparent silver nanowire/PEDOT: PSS film heaters are intensively studied for manipulating heating temperature, response time, and power consumption. Influences of substrate heat capacity, heat transfer coefficient between air and heater, sheet resistance and dimension of Ag nanowire film, on the thermal response are investigated from thermodynamic analysis. Suggestion is given for practical applications that if other parameters are fixed, Ag nanowire coverage can be utilized as an effective parameter to adjust the thermal response. The heat transfer coefficient plays opposite roles on thermal response speed and achievable steady temperature. A value of approximate to 32 W m(-2) K-1 is obtained from transient process analysis after correcting it by considering heater resistance variation during heating tests. Guidance of designing heaters with a given response time is provided by forming Ag nanowire film with a suitable sheet resistance on substrate of appropriate material and a certain thickness. Thermal response tests of designed Ag heaters are performed to show higher heating temperature, shorter response time, and lower power consumption (179 degrees C cm(2) W-1) than ITO/FTO heaters, as well as homogeneous temperature distribution and stability for repeated use. Potential applications of the Ag heaters in window defogging, sensing and thermochromism are manifested.