Flexible Transparent and Free-Standing SiC Nanowires Fabric: Stretchable UV Absorber and Fast-Response UV-A Detector
Flexible Transparent and Free-Standing SiC Nanowires Fabric: Stretchable UV Absorber and Fast-Response UV-A Detector
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柔性透明、独立式碳化硅纳米线织物：可拉伸紫外线吸收剂和快速响应 UV-A 探测器
DOI：
10.1002/smll.201703391
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发表时间：
2018
期刊：
影响因子：
13.3
通讯作者：
Wang Chengxin
中科院分区：
文献类型：
--
作者：
Sun Bo;Sun Yong;Wang Chengxin
透明柔性材料是光电多功能集成器件和便携式电子产品的理想材料。在此，2 H-SiC纳米线被组装成柔性、透明、自立的纳米线织物（FTS-NWsF）。合成的超长纳米线形成具有少量堆垛层错的高质量晶体。光学透射光谱显示，FTS-NWsF吸收大部分入射的200-400 nm光，但对可见光保持透明。一种聚二甲基硅氧烷（PDMS）-SiC织物-PDMS夹层膜器件，即使在重复拉伸高达50%时也表现出稳定的电输出。与之前普遍存在堆垛层错的SiC纳米线不同，这种透明、可拉伸的SiC织物显示出相当大的光电活性，并对340-400 nm的光表现出快速的光响应（上升和衰减时间< 30 ms），覆盖了大部分UV-A光谱区域。这些进展代表了功能性光电SiC纳米线和透明和可拉伸光电系统设计的重大进展。
Transparent and flexible materials are desired for the construction of photoelectric multifunctional integrated devices and portable electronics. Herein, 2H‐SiC nanowires are assembled into a flexible, transparent, self‐standing nanowire fabric (FTS‐NWsF). The as‐synthesized ultralong nanowires form high‐quality crystals with a few stacking faults. The optical transmission spectra reveal that FTS‐NWsF absorbs most incident 200–400 nm light, but remains transparent to visible light. A polydimethylsiloxane (PDMS)–SiC fabric–PDMS sandwich film device exhibits stable electrical output even when repeatedly stretched by up to 50%. Unlike previous SiC nanowires in which stacking faults are prevalent, the transparent, stretchable SiC fabric shows considerable photoelectric activity and exhibits a rapid photoresponse (rise and decay time < 30 ms) to 340–400 nm light, covering most of the UV‐A spectral region. These advances represent significant progress in the design of functional optoelectronic SiC nanowires and transparent and stretchable optoelectronic systems.