Zhang Xiaopan, Ye Tengyang, Meng Xianghao, Tian Zhihui, Pang Lihua, Han Yaojie, Li Hai, Lu Gang, Xiu Fei, Yu Hai-Dong, Liu Juqing, Huang Wei
Institute of Advanced Materials (IAM) and Key Laboratory of Flexible Electronics (KLoFE), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P.R. China.
Xi'an Institute of Flexible Electronics, MIIT Key Laboratory of Flexible Electronics, Shaanxi Key Laboratory of Flexible Electronics, Xi'an Key Laboratory of Flexible Electronics (KLoFE), and Xi'an Key Laboratory of Biomedical Materials and Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P.R. China.
ACS Nano. 2020 Apr 28;14(4):3876-3884. doi: 10.1021/acsnano.9b09880. Epub 2020 Mar 18.
In the past decades, various alternating current electroluminescent (ACEL) devices, especially the flexible ones, have been developed and used in flat panel display, large-scale decorating, logo display lighting, optical signaling, . Transparent plastics are usually used as substrates in ACEL devices; however, they are undegradable and may cause serious environmental pollution. Herein, we have developed a flexible transient ACEL device based on transparent fish gelatin (FG) films. The FG films were made from fish scales, which are sustainable, cost-efficient, and eco-friendly. These films could dissolve in water within seconds at 60 °C and degrade completely within 24 days in soil. The transmittance of these FG films was up to 91.1% in the visible spectrum, comparable to that of polyethylene terephthalate (PET) (90.4%). After forming a composite with silver nanowires (Ag NWs), the Ag NWs-FG film showed a transmittance up to 82.3% and a sheet resistance down to 22.4 Ω sq. The fabricated ACEL device based on the Ag NWs-FG film exhibited high flexibility and luminance up to 56.0 cd m. The device could be dissolved in water within 3 min. Our work demonstrates that the sustainable, flexible, and transparent FG films are a promising alternative for green and degradable substrates in the field of flexible electronics, including foldable displays, wearable devices, and health monitoring.
在过去几十年中，已开发出各种交流电致发光（ACEL）器件，尤其是柔性器件，并应用于平板显示、大规模装饰、标志显示照明、光信号传输等领域。透明塑料通常用作ACEL器件的基板；然而，它们不可降解，可能会造成严重的环境污染。在此，我们基于透明鱼明胶（FG）薄膜开发了一种柔性瞬态ACEL器件。FG薄膜由鱼鳞制成，具有可持续性、成本效益高且环保。这些薄膜在60℃下几秒钟内即可溶于水，并在土壤中24天内完全降解。这些FG薄膜在可见光光谱中的透过率高达91.1%，与聚对苯二甲酸乙二醇酯（PET）（90.4%）相当。与银纳米线（Ag NWs）形成复合材料后，Ag NWs-FG薄膜的透过率高达82.3%，方阻低至22.4Ω/sq。基于Ag NWs-FG薄膜制备的ACEL器件具有高柔韧性，亮度高达56.0 cd/m²。该器件可在3分钟内溶于水。我们的工作表明，可持续、柔性且透明的FG薄膜是柔性电子领域中绿色可降解基板的一种有前途的替代品，包括可折叠显示器、可穿戴设备和健康监测。
