A Flexible Integrated System Containing a Microsupercapacitor, a Photodetector, and a Wireless Charging Coil

作者：Yang Yue, Zhichun Yang, Nishuang Liu, Weijie Liu, Hui Zhang, Yanan Ma, Congxing Yang, Jun Su, Luying Li, Fei Long, Zhengguang Zou, Yihua Gao · 发表于：ACS Nano · 年份：2016 · DOI：10.1021/acsnano.6b06326 · 被引用次数：188 · 研究领域：Supercapacitor Materials and Fabrication、Advanced Sensor and Energy Harvesting Materials、Conducting polymers and applications

Nowadays, the integrated systems on a plane substrate containing energy harvesting, energy storing, and working units are strongly desired with the fast development of wearable and portable devices. Here, a simple, low cost, and scalable strategy involving ink printing and electrochemical deposition is proposed to fabricate a flexible integrated system on a plane substrate containing an all-solid-state asymmetric microsupercapacitor (MSC), a photoconduct-type photodetector of perovskite nanowires (NWs), and a wireless charging coil. In the asymmetric MSCs, MnO 2 -PPy and V 2 O 5 -PANI composites are used as positive and negative electrodes, respectively. Typical values of energy density in the range of 15–20 mWh cm –3 at power densities of 0.3–2.5 W cm –3 with an operation potential window of 1.6 V are achieved. In the system, the wireless charging coil receives energy from a wireless power transmitter, which then can be stored in the MSC to drive the photoconductive detector of perovskite NWs in sequence. The designed integrated system exhibits a stable photocurrent response comparable with the detector driven by an external power source. This research provides an important routine to fabricate integrated systems.