The 80th JSAP Autumn Meeting 2019

Presentation information

Oral presentation

12 Organic Molecules and Bioelectronics » 12.5 Organic solar cells

[19a-E101-1~12] 12.5 Organic solar cells

Thu. Sep 19, 2019 9:00 AM - 12:15 PM E101 (E101)

Nobuyuki Matsuki(Kanagawa Univ.), Takeshi Sano(Yamagata Univ.)

11:00 AM - 11:15 AM

[19a-E101-8] Mixed Composition Metal Halide Perovskite Solar Cells for Ambient Light Energy Harvesting: Low Light Current-Voltage Behavior

Richard Murdey1, Minh Anh Truong1, Kento Otsuka1, Ruito Hashimoto1, Tomoya Nakamura1, Atsushi Wakamiya1 (1.Kyoto Univ.)

Keywords:perovskite solar cells, impedance measurements, ambient light energy harvesting

Ambient light energy harvesting is a potentially useful application for perovskite photovoltaics that could sidestep the instability of the perovskite materials observed under strong solar radiation. A potential issue, however, is whether the high power conversion efficiency observed under 1 sun operation can be maintained at very low ambient light intensity. In this study, the power output scaling of perovskite solar cell devices with incident light intensity is investigated. Analysis of the current voltage curves and impedance measurements reveal two significant factors influencing low light performance. First, the output efficiency increases at light intensities below 1 sun as the heating effect of the incident radiative energy is reduced. Second, device efficiencies under very low incident light intensities are better than expected as a result of increasing shunt resistance.