Worldwide Round-Robin Inter-Comparison 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, 072
Publication date: 21st November 2022

Perovskite solar cells, which have organic/inorganic hybrid perovskite crystals in the photoactive layer, are attracting attention as next-generation solar cells because they do not require vacuum processes and can achieve photoelectric conversion efficiencies as high as 25.7% even though their solution process fabrication.

However, it is considered difficult to reproduce the I-V curve of perovskite solar cells because their electrical characteristics change depending on the exposure history (temperature, illumination, voltage, and light exposure time).

In some cases, metastable solar cells such as perovskite solar cells are difficult to be evaluated by IEC 60904-1, which is the current standard for solar cell evaluation, and reliability evaluation method based on international standards has not been established.

Saito et al. [1] have reported that excellent consistency existed between the steady-state maximum powers (Pmax) obtained by the Maximum power tracking (MPPT), steady-state (or stabilized) power output (SPO) and dynamic I-V measurements.

However, this consistency has not been proved between testing laboratories in the world. In this paper we present the results of a round-robin intercomparison between AIST / Japan, CSIRO / Australia, Fraunhofer ISE / Germany, JRC / EU, KISTEC / Japan and NCU / Taiwan for Pmax measurement of a perovskite solar cell. Pmax deviation to the weighted mean calculated for each laboratory was -1.3 – 7.5 % as shown in Fig. 1. Cause of the deviation was found to be degradation of the sample cell and difference in store time in the dark including shipping time.

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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