Flexible optoelectronics that can be bent, wrapped, and stretched have attracted interest for wearable and mobile applications. In this work, we demonstrate a transparent 360° omnidirectional photodetector (PD) that can be stretched and wrapped around flexible or curved substrates. By embedding interlaced ZnO and Ag nanowires (NWs) in thermoplastic polyurethane via inkjet printing, the device featured > 75% transmittance in the visible region, showing high photoresponsivity and response time (10–30 A/W and 0.8 s, respectively). Moreover, the flexible PD performs well under deformation (only 9% decay in the photocurrent under 60% strain and 8% loss when the device is bent at a radius of 5 mm), which allows it to be readily applied on curved surfaces, such as skin or optical fibers. This study opens the door for the development of flexible optoelectronics that could be implemented in fiber optics, wearable electronics, self-powered systems, bio-signal monitors, and epidermal electronics.

可以弯曲，包裹和拉伸的柔性光电器件吸引了可穿戴和移动应用的兴趣。在这项工作中，我们演示了一个透明的360°全向光电探测器（PD），可以将其拉伸并包裹在柔性或弯曲的基板周围。通过喷墨打印将交错的ZnO和Ag纳米线（NW）嵌入热塑性聚氨酯中，该器件在可见光区域的透射率> 75％，显示出高光响应性和响应时间（分别为10-30 A / W和0.8 s）。而且，柔性PD在变形下表现良好（当以5mm的半径弯曲装置时，在60％应变下光电流衰减只有9％，损耗为8％），这使得它可以容易地应用于弯曲表面，例如如皮肤或光纤。