P.V.V. Jayaweera1,S. Maeshima1,Satoshi Uchida2,Shoji Kaneko1,Hiroshi Segawa2
SPD Laboratory, Inc.1,RCAST, The University of Tokyo2
P.V.V. Jayaweera1,S. Maeshima1,Satoshi Uchida2,Shoji Kaneko1,Hiroshi Segawa2
SPD Laboratory, Inc.1,RCAST, The University of Tokyo2
The rapid research and development of perovskite solar cell (PSC) for practical applications are driven by both global warming concerns and industrial demands. Due to the distinctive characteristics exhibited by PSC, such as hysteresis, establishing a universally standardized and rational evaluation process becomes challenging. In this study, we present an equipment system designed to address this challenge. Hysteresis in I-V measurements, caused by capacitance components in stacked PSC, can lead to overestimation or underestimation of the performance. PSC exhibiting hysteresis in the I-V curve manifests two distinct maximum power points in the forward and reverse I-V curves, which depend on the scan speed, starting point, and direction of the scan. By implementing Maximum Power Point Tracking (MPPT), the genuine maximum output power of PSC can be promptly determined. Our newly developed device enables simultaneous I-V tracing and MPPT for up to six solar cells, facilitating research and development. The system continuously plots the light intensity and temperature data alongside the maximum power point, allowing each sample to handle up to 10 V and 1 A capacity. With six independently programmable electronic loads integrated into the analyzer, the MPPT algorithm individually maintained each sample at its maximum power point, ensuring efficient power generation. This multi-channel MPPT-integrated PV power analysis system offers a comprehensive solution to the evaluation challenges faced in PSC research and development. It enables accurate and efficient assessment of PSC performance, contributing to the advancement of practical applications and standardization of evaluation methods.