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Highly efficient photovoltaic energy storage hybrid system based on ultrathin carbon electrodes designed for a portable and flexible power source

Farhadi, Bita and Marriam, Ifra and Yang, Shengyuan and Zhang, Hui and Tebyetekerwa, Mike and Zhu, Meifang and Ramakrishna, Seeram and Rajan, Jose and Zabihi, Fatemeh (2019) Highly efficient photovoltaic energy storage hybrid system based on ultrathin carbon electrodes designed for a portable and flexible power source. Journal of Power Sources, 422. pp. 196-207. ISSN 0378-7753 (Print), 1873-2755 (Online)

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Abstract

Integrated perovskite solar capacitor (IPSC) systems are the new paradigm for power generation and storage. Herein, a novel configuration and combination of materials for an IPSC, theoretically affording a maximized areal capacitance of 2.35 mF cm−2 and exceeding a 25% overall photo-chemical-electricity energy conversion efficiency is reported. A ∼1 μm solid-state photocapacitor is suggested based on a CH3NH3PbI3 photoactive layer, inorganic buffer junctions, an ultrathin nanocarbon border and top electrodes. For the first time, bulk and interfacial imperfections in the perovskite layer are reckoned in simulation, realizing the recombination rate to 14-order of magnitude higher than that in the perfect perovskite structure. The simulation considers the band gap energy, the valance and conduction bands, carrier mobility and carrier density of every individual layer of the designed IPSC. Overall, the results for the areal capacitance, output voltage and photocharging efficiency under various illumination conditions, frequencies and dielectric materials show that the performance of the perovskite power pack is mildly susceptible to external and internal triggers. This ultrathin and sturdy architecture, shows promise for use in self-powered portable and wearable personal devices.

Item Type: Article
Additional Information: Indexed by WOS & Scopus
Uncontrolled Keywords: Photocapacitor; Perovskite; Portable devices; Wearable electronics; Solar cell; Energy storage
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TP Chemical technology
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 25 Oct 2019 02:49
Last Modified: 25 Oct 2019 02:49
URI: http://umpir.ump.edu.my/id/eprint/25320
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