article · Materials Research Express
Abstract In this study, we conducted real-world outdoor performance and stability tests on two different configurations of perovskite solar cells in the climate conditions of Bahir Dar, Ethiopia. Under outdoor illumination with an incident power of 69 mW cm −2 , this device demonstrated a power conversion efficiency (PCE) of 15% for an active area of 0.1 cm 2 . The maximum power generated, measured at a solar irradiance of 72 mW/ cm 2 , and was 1.23 mW. The second perovskite device has planar p-i-n configuration. This device achieved a PCE of 18% without masking, but the PCE dropped to 11% when the device was covered with circular aperture mask. Maximum power tracking and stability measurements of the device were conducted. Maximum power generation occurred at operating voltages ranging from 0.8 V to 1.2 V for a device with an active area of 0.095 to 0.1cm 2 . After 30 days of environmental exposure, the device maintained more than 90% of its initial PCE.
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DOI: 10.1088/2053-1591/ad495b
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