Second Worldwide Roud Robin Test of Maximum Power Measurement for a Perovskite Solar Cell
Tomoyuki TOBE a, Daisuke AOKI a, Hidenori SAITO a, Masahide KAWARAYA a, Shinichi MAGAINO b
a Kanagawa Institute of Industrial Science and Technology (KISTEC), KSP EAST 1F, 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa 213-0012, Japan
b Research Association for Technology Innovation of Organic Photovoltaics (RATO), 4-6-1, Komaba, Meguro-ku, Tokyo, 153-8904, JAPAN
Poster, Tomoyuki TOBE, 084
Publication date: 24th October 2023

Perovskite solar cells are attracting attention as next-generation solar cells due to their ease of fabrication through solution coating and their high photoelectric conversion efficiency of around 26%.

However, reproducibility of the I-V curve is not high because the electrical characteristics of perovskite solar cells change with the history of factors such as light exposure, temperature, and voltage1). Metastable solar cells like perovskite solar cells face challenges in evaluation according to the IEC 60904-1 standards, the standard for assessing solar cells, and there is no established evaluation method based on international standards.

At our research institute, the first international round-robin test was conducted from 2021 to 2023, and the deviation in Pmax (maximum power output) among various research institutes ranged from -1.3% to 7.5%. It was found that the cause of this deviation was the degradation of sample cells and differences in dark storage time, including transportation time. The second international round-robin test, conducted in a hub-and-spoke manner, minimized sample degradation. Additionally, the stability of perovskite solar cells (PSC) due to light exposure was confirmed through measurements conducted over several days.

The participating institutions in the second international round-robin test were AIST (Japan), JET (Japan), CSIRO (Australia), Fraunhofer ISE (Germany), JRC (EU), NREL(USA) and KISTEC (Japan). The values of Pmax calculated by each institute showed remarkably consistent results.

Acknowledgment : Entrusted by METI, Japan

We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info