Speaker
Description
Hybrid organic-inorganic perovskite photovoltaic has achieved unmatched improvemtnes of their power conversion efficiency in the last decade. Nevertheless, nonradiative recombination of charge carriers due to bulk and interface defects still reduces the open-circuit voltage and the efficiency of perovskite solar cells. Incorporating additive, process optimization and interface engineering are effective approaches employed to reduce such issues. Here, we develop quasi-2D p-i-n perovskite solar cells incorporating an alpha-methylbenzyl ammonium iodide (MBAI) cation with outstanding photovoltaic performance and stability. MBAI incorporation results in films with excellent optical and electrical properties, leading to higher VOC of ~ 1.15 V, FF of above 77 %, and power conversion efficiencies in the range of 18 %. Our encapsulated solar cells show excellent operational stability under white light illumination in ambient air for >1000 hours. Due to the simple and robust preparation process, the investigated inverted perovskite solar cell can easily be combined with other solution-processed thin film solar cells to form multi-junction devices and can easily be integrated into different lightweight and flexible products like drones or wearable sensors.
References
Bekele Hailegnaw et al. Solar RRL 2023, accepted
| Keywords | photovoltaics, solar cell, perovskite |
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