分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-08
Huang, QJ [Huang, Qijin][ 1 ]
Shen, WF [Shen, Wenfeng][ 1 ]
Fang, XZ [Fang, Xingzhong][ 1 ]
Chen, GF [Chen, Guofei][ 1 ]
Guo, JC [Guo, Junchao][ 1 ]
Xu, W [Xu, Wei][ 1 ]
Tan, RQ [Tan, Ruiqin][ 2 ]
Song, WJ [Song, Weijie][ 1 ]
摘要： Highly flexible and transparent film heaters (TFHs) with superior mechanical and thermal stability were fabricated by embedding silver nanowires (AgNWs) into transparent polyimide (PI) films using a solution coating method. The fabricated AgNW/PI hybrid TFHs exhibited higher heating temperatures ($96 C) with lower input voltage ($6 V), shorter response time (T < 40 s), and lower power consumption (160.6 C cm2 W 1) than ITO/FTO heaters, as well as stability after repeated use. The AgNW/PI hybrid TFHs also showed excellent resistance to bending. After undergoing outer bending for a 1000 times, the change of sheet resistance was less than 18%. The effective embedment of the AgNW network in the surface of the transparent PI film not only decreased the surface roughness (Rrms < 1 nm) but also enhanced the resistance against oxidation and moisture. Potential applications of the AgNW/PI TFHs in window defogging and thermochromics are demonstrated.
分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-02
Huang, QJ [Huang, Qijin][ 1 ]
Shen, WF [Shen, Wenfeng][ 1 ]
Fang, XZ [Fang, Xingzhong][ 1 ]
Chen, GF [Chen, Guofei][ 1 ]
Yang, Y [Yang, Ye][ 1 ]
Huang, JH [Huang, Jinhua][ 1 ]
Tan, RQ [Tan, Ruiqin][ 2 ]
Song, WJ [Song, Weijie][ 1 ]
摘要： Flexible transparent conductive films (TCFs) are used in a variety of optoelectronic devices. However, their use is limited due to poor thermostability. We report hybrid TCFs incorporation in both aluminum-doped zinc oxide (AZO) and silver nanowires (AgNWs). The layered AZO/ AgNWs/AZO structure was deposited onto a transparent polyimide (PI) substrate and displayed excellent thermo- stability. When heated to 250 °C for 1 h, the change in resistivity (Rc) was less than 10% (Rc of pure AgNW film > 500) while retaining good photoelectric properties (Rsh = 8.6 Ohm/sq and T = 74.4%). Layering the AgNW network between AZO films decreased the surface roughness (Rrms < 8 nm) and enhances the mechanical flexibility of the hybrid films. The combination of these characteristics makes the hybrid film an excellent candidate for substrates of novel flexible optoelectronic devices which require high-temperature processing.
分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-02
Zhu, CT [Zhu, Chaoting][ 1 ]
Li, J [Li, Jia][ 1 ]
Yang, Y [Yang, Ye][ 1 ]
Lan, PJ [Lan, Pinjun][ 1 ]
Huang, JH [Huang, Jinhua][ 1 ]
Lu, YH [Lu, Yuehui][ 1 ]
Tan, RQ [Tan, Ruiqin][ 2 ]
Dai, N [Dai, Ning][ 3 ]
Song, WJ [Song, Weijie][ 1,4 ]
摘要： In this paper, Ga-doped ZnO (GZO) thin films are deposited on glass substrates by radio frequency magnetron sputtering for low loss plasmonic applications. The effects of Ga2O3 content in the target and substrate temperature on the electrical, structural and optical properties of GZO films are investigated. Film with the highest carrier concen- tration of 7.0 × 1020 cm− 3 was obtained at a Ga2O3 content of 5 wt% in the target under room temperature deposi- tion. With increasing deposition temperature, the lowest electrical resistivity of 3.8 × 10− 4 Ω cm was acquired at a deposition temperature of 200 °C. The values of plasmonic resonances wavelength could be changed from 1.35 to 2.39 μm by adjusting the carrier concentration. Material absorption losses in these GZO films are 10 times lower than that of conventional Ag films at telecommunication wavelengths. These results make GZO a promising low-loss plasmonic material operating at telecommunication wavelengths.
分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-02
Huang, QJ [Huang, Qijin][ 1 ]
Shen, WF [Shen, Wenfeng][ 1 ]
Xu, QS [Xu, Qingsong][ 1 ]
Tan, RQ [Tan, Ruiqin][ 2 ]
Song, WJ [Song, Weijie][ 1 ]
摘要： Silver nanoparticles with a mean diameter of approximately 30 nm were synthesized by reduction of silver nitrate with triethanolamine in the presence of polyacrylic acid. Silver nanoparticle-based ink was prepared by dispersing silver nanoparticles into a mixture of water and ethylene glycol. The mechanism for the dispersion and aggregation of silver nanoparticles in ink is discussed. The strong electrostatic repulsions of the carboxylate anions of the adsorbed polyacrylic acid molecules disturbed the aggrega- tion of metal particles in solutions with a high pH value (pH > 5). An inkjet printer was used to deposit this silver nanoparticle-based ink to form silver patterns on photo paper. The actual printing qualities of the silver tracks were then analyzed by variation of printing passes, sintering temperature and time. The results showed that sintering temperature and time are associated strongly with the conductivity of the inkjet-printed conductive patterns. The conductivity of printed patterns sintered at 150 C increased to 2.1 107 S m 1, which was approximately one third that of bulk silver. In addition, silver tracks on paper substrate also showed better electrical performance after folding. This study demonstrated that the resulting ink-jet printed patterns can be used as conductive tracks in flexible electronic devices.
分类： 物理学 >> 普通物理:统计和量子力学,量子信息等 提交时间： 2017-05-02
Xu, QS [Xu, Qingsong][ 1 ]
Shen, WF [Shen, Wenfeng][ 1 ]
Huang, QJ [Huang, Qijin][ 1 ]
Yang, Y [Yang, Ye][ 1 ]
Tan, RQ [Tan, Ruiqin][ 2 ]
Zhu, K [Zhu, Ke][ 1 ]
Dai, N [Dai, Ning][ 3 ]
Song, WJ [Song, Weijie][ 1 ]
摘要： Hybrid transparent conductive films (TCFs) with a sandwich structure composed of aluminum-doped zinc oxide (AZO) and Ag nanowires (AgNWs) were deposited on polyethylene terephthalate (PET) substrates. The AZO layers were prepared at room temperature by RF magnetron sputtering. The AgNWs were synthesized by a modified polyol method and inserted into the AZO layers. The optical properties and conductivity can be modified by the number of spin-coating cycles of an AgNWs suspension. Typically, an AZO/AgNW/AZO hybrid film exhibited an optical transmittance of 80.5%, a sheet resistance of 27.6 U sq 1 and an optical haze of 14.9%. The increase in optical haze caused by the silver nanowires may be beneficial for applications in solar cells. The hybrid films presented excellent flexible stability, showing only minor resistance changes and no surface cracks compared with pure AZO films. The AZO layers acted as the protecting layers that enhanced the adhesive and thermal stability of the hybrid films. The resulting hybrid TCFs with an AZO/ AgNW/AZO sandwich structure show potential applications in flexible electronics, energy storage and photovoltaic devices.
点击量
待评议
点击量
下载量
评论
