Prediction Method for Power Generation of Perovskite Solar Cells for Practical Use
Masahide Kawaraya a, Daisuke Aoki a, Tomoyuki Tobe a, Hidenori Saito a, Shinichi Magaino b
a Kanagawa Institute of Industrial Science and Technology (KISTEC)
b Research Association for Technology Innovation of Organic Photovoltaics (RATO)
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23)
Kobe, Japan, 2023 January 22nd - 24th
Organizers: Seigo Ito, Hideo Ohkita and Atsushi Wakamiya
Oral, Masahide Kawaraya, presentation 025
Publication date: 21st November 2022

Perovskite solar cells (PSCs) are expected to be one of the next generation photovoltaics. However, considerable difficulties in reliable measurements of the power conversion efficiency and prediction for power generation of PSCs are a severe concern for the fair and accurate application of advancements in PSC technologies. These difficulties are regarded to result from a slow current response to the applied voltage and metastability of PSCs. The metastability of the PSCs could mostly be related to changes in the electrical properties in the cells by exposure history (voltage bias, irradiance, and temperature). In the case of PSCs, reproducible I-V curve measurements might be difficult because the cells' electrical properties change during the measurements. Steady-state measurements of the maximum power may be better than the I-V curve measurements defined in IEC 60904-1 for such metastable photovoltaics. Saito et al. [1] have reported that excellent consistency existed between the steady-state maximum powers obtained by the Maximum Power Point Tracking method (MPPT), steady-state (or stabilized) power output (SPO) and dynamic I-V measurements. In this study, changes in the electrical properties with exposure history will be discussed by using the MPPT method in order to predict the power generation of PSCs for practical use.

This study was supported by New Energy Industrial Technology Development Organization (NEDO) and Ministry of Economy, Trade and Industry (METI) of Japan.

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