NDLI: A highly efficient self-power pack system integrating supercapacitors and photovoltaics with an area-saving monolithic architecture

Content Provider	Royal Society of Chemistry (RSC)
Author	Park, Byoungwook Jang, Jae-Hyung Lee, Seongyu Lee, Kwanghee Kim, Junghwan Lee, Sun Min Hwang, Yun-Hwa
Copyright Year	2017
Abstract	Self-charging power packs (SPPs), integrating both a solar cell and energy storage capacitor (EC) into a single device, are very promising energy systems due to their multiple functions of energy harvesting and storage. Despite their promising potential, however, the monolithic stacking of solid-state ECs onto a large-area solar cell without any external wires is one of the crucial challenges. Here, we successfully demonstrate compact and monolithically stacked SPPs combining a polyvinyl alcohol (PVA)/phosphoric acid (H3PO4)-based solid-state supercapacitor and an organometal halide perovskite- or polymer-based solar cell (PeSC or PSC). As a result of robust interconnection formed via a novel electric glue and efficient solar cells with an enlarged photo-harvesting area of up to 100 mm2, the SPPs exhibited a very high storage efficiency (ηstorage) and overall efficiency (ηoverall) of 80.31% and 10.97%, respectively, for the PeSC-supercapacitor power pack, and 64.59% and 5.07%, respectively, for the PSC-supercapacitor power pack. To the best of our knowledge, the ηoverall value of our PeSC-supercapacitor power pack is by far the highest reported efficiency for integrated self-charging power packs.
Starting Page	1906
Ending Page	1912
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	5
Issue Number	5
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta09117b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	EC PSC supercapacitor Solar cell Capacitor Polyvinyl alcohol Acid Supercapacitor Halogen Perovskite Storage efficiency
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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