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
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.
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
Qi, LF [Qi, Liangfei][ 1,2 ]
Li, J [Li, Jia][ 1 ]
Zhu, CT [Zhu, Chaoting][ 1 ]
Yang, Y [Yang, Ye][ 1 ]
Zhao, SJ [Zhao, Shijin][ 2 ]
Song, WJ [Song, Weijie][ 1 ]
摘要： In this paper, flexible Ag electrodes with a hexagonal micromesh structure were fabricated on PET substrate using a photolithography technique. The effect of film thickness on optical and electrical properties of Ag electrodes was investigated systematically. Furthermore, these flexible transparent Ag mesh electrodes were firstly applied to a polymer dispersed liquid crystal (PDLC) device and its performance was evaluated. All of the Ag electrodes exhibited a high average transmittance of about 80.2–85.0% in the visible range (400–800 nm), and the minimum sheet resistance value reached 8.2 U sq 1. The prepared Ag mesh also showed an excellent performance of adhesion and bending, demonstrating its superior durability. The PDLC device based on Ag mesh electrodes showed comparable performance with that using ITO electrodes, indicating that the Ag mesh film can be a good substitution for ITO electrodes in PDLC devices and may find practical application in large area flexible devices.
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