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

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• 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
• 刊名：ACS Nano
• 出版年：2016
• 出版时间：December 27, 2016
• 年：2016
• 卷：10
• 期：12
• 页码：11249-11257
• 全文大小：717K
• ISSN：1936-086X

文摘

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, MnO₂-PPy and V₂O₅-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.