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Integrated Perovskite Solar Capacitors with High Energy Conversion Efficiency and Fast Photo-Charging Rate

Abstract

Integrating energy harvesting devices with energy storage systems can realize the temporal buffer of local power generation and power consumption. In this manner, self-charging energy devices consisting of photovoltaic cells and energy storage units can serve as sustainable and portable distributed power sources that can concurrently generate and store electric energy without the need of external charging circuits. Here, an integrated perovskite solar capacitor (IPSC) is realized by combining a perovskite solar cell (PSC) and a supercapacitor into a single device. Taking advantages of nanocarbon electrodes, the IPSCs possess simple configuration, compact structure and well-matched operation voltage. The IPSCs can be rapidly charged by different modes (including photo-charging mode, galvanostatic-charging mode, and photoassisted-galvanostatic-charging mode), and show a remarkable overall photo-chemical-electricity energy conversion efficiency as high as 7.1% at photo-charging mode. Moreover, the IPSCs can work efficiently under weak light illumination. This study can provide new insights for the design of novel integrative energy devices that combine the functions of solar power harvesting and electrochemical energy storage.

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Publication details

The article was received on 16 Oct 2017, accepted on 22 Nov 2017 and first published on 23 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA09099D
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Integrated Perovskite Solar Capacitors with High Energy Conversion Efficiency and Fast Photo-Charging Rate

    J. Liang, G. Zhu, Z. Lu, P. Zhao, C. Wang, Y. Ma, Z. Xu, Y. Wang, Y. Hu, L. Ma, T. Chen, Z. Tie, J. Liu and Z. Jin, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA09099D

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