Evaluation of energy conversion-storage devices based on perovskites solar cells in comparison with other solar cells under different light intensities
Nilanka M. Keppetipola a, Keishi Tada b, Takeru Bessho c, Satoshi Uchida c, Hiroshi Segawa b, Lionel Hirsch d, Thierry Toupance a, Ludmila Cojocaru a
a University of Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 351 Cours de la Libération, F-33405 Talence, Cédex, France
b The University of Tokyo, Department of General Systems Studies, Graduate School of Arts and Sciences, 3-8-1, Komaba, Meguro, Tokyo 153-8902, Japan
c The University of Tokyo, Research Center for Advanced Science and Technology, 4-6-1, Komaba, Meguro, Tokyo 153-8904, Japan
d University of Bordeaux, CNRS, Bordeaux INP, IMS, UMR 5218, 351 Cours de la Libération, F-33405 Talence, Cédex, France
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Poster, Ludmila Cojocaru, 213
Publication date: 20th April 2022

The rapid development of the Internet of Things (IoTs) demands self-powered indoor devices to supply continuous power. Since these devices are working independently, self-powered technology in indoor conditions such as indoor photovoltaics has received much attention. At the same time, energy storage devices used should be connected with solar cells to solve the problem of the imbalance between solar output and energy demand. The development of perovskite solar cells (PSCs) has attracted worldwide attention and become one of the best choices for indoor solar energy applications. As a result, the design of a perovskite-supercapacitor pack capable to generate continuous power under indoor light would constitute a significant advance toward energy transition [1].
In this study, three types of solar cells, crystalline Si-SCs, DSCs, and PSCs were selected and a comparative evaluation of photo-storage efficiencies was examined in the range of different light intensities to evaluate the suitable combination for future use in a self-powered indoor device. Non-volatile (ionic liquid electrolyte), high working potential range (up to 3.5 V), and biomass carbon (1998 m2 g-1)-based high-performance (92.1 W h kg−1, 2046.9 W kg−1) supercapacitors were prepared as reported recently by our group [2] and connected with the solar cells. The characterization of the photo-storage device started from the evaluation of solar cell performances using I-V curves and maximum power point tracking technique. After clarification of the active area, the solar cells were able to deliver the same power and the solar cells were connected to the supercapacitor using either DC-DC converter or direct connections. Among the solar cells, a single PSC was able to show better power delivery efficiencies and supply the required minimum operating voltage for the DC-DC boost converter at low light intensities where two series solar cells are required for other solar cells. Moreover, high efficiencies obtained at high discharge current provide the potential for our PSC-supercapacitor system to be used in high-power electronic applications.

This work benefited from State assistance managed by the National Research Agency under the “Programme d’Investissements d’Avenir” (ANR-19-MPGA-0006), supported by ELORPrintTec ANR-10-EQPX-28-01, and the New Energy and Industrial Technology Development Organization (NEDO) PV R&D programs. The authors would like to acknowledge NextPV a CNRS and RCAST/University Tokyo collaboration.

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