Steady-state Measurement of Maximum Power for Perovskite Solar Cell
Daisuke Aoki a, Hidenori Saito a, Tomoyuki Tobe a, Shinichi Magaino a
a Kanagawa Institute of Industrial Science and Technology (KISTEC), Kawasaki, Japan, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Japan
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP20)
Tsukuba-shi, Japan, 2020 January 20th - 22nd
Organizers: Michio Kondo and Takurou Murakami
Poster, Daisuke Aoki, 084
Publication date: 14th October 2019

Perovskite solar cells (PSCs) have been expected to be one of the next-generation solar cells because of high power conversion efficiency and low manufacturing cost. Recently, their power conversion efficiencies (h) became to exceed 20%, and low cost printing processes applicable to their manufacturing preparation tend to accelerate the possibilities of practical use. Despite these circumstances, the reliability assessments based on the international standards for their performance evaluation have not been established, and therefore their commercialization has not been discussed in comparing with the normalized data given by the evaluation organizations in the world.

Since PSCs show slow current response to applied voltage and performance change with time, it is difficult to determine the maximum power (Pmax) by the conventional I-V measurement procedure. In this paper, we have tried to apply three methods to determine the Pmax of PSCs. The three methods are as follows: (1) Maximum power point tracking (MPPT), (2) Dynamic (or Stabilized) I-V methods and (3) Steady-state (or Stabilized) power output (SPO), also called as Stabilized current at fixed voltage (SCFV). Although three methods for Pmax determination is same in principle and may offer almost same results, we recommend the MPPT method free from oscillation for slow-responding metastable devices because a continuous MPPT measurement provides not only Pmax but also information for steady-state.

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

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