Mehdi Hanadi, Mhamdi Asya, Hannachi Riadh, Bouazizi Abdelaziz
Équipe Dispositifs Électroniques Organiques et Photovoltaïque Moléculaire, Laboratoire de La Matière Condensée et des Nanosciences, Faculté des Sciences de Monastir, Université de Monastir. Avenue de L'environnement 5019 Monastir Tunisia
Laboratoire des Energies et des Matériaux (LabEM), Institut Supérieur d'Informatique et des Techniques de Communication, Université de Sousse Hammam Sousse 4011 Tunisia.
RSC Adv. 2019 Apr 26;9(23):12906-12912. doi: 10.1039/c9ra02036e. eCollection 2019 Apr 25.
Organometal halide perovskite solar cells are becoming one of the most competitive emerging technologies. They have reached a power conversion efficiency (PCE) of 22.7% in 10 years. Their high efficiency and simple fabrication process render perovskite solar cells a promising player in the field of third-generation photovoltaics. The deposition methods play an important role in the fabrication of a high quality films. In this paper, we report the preparation of methylammonium lead bromide (MAPbBr) thin film using a two-step method based on the transformation of PbBr into MAPbBr perovskite after dipping in a MABr solution. The effects of the dipping time and the annealing time on the photovoltaic, optical and structural properties of the devices were studied. The dipping time treatments of the inorganic film in organic solution were conducted from 30 s to 15 min. The obtained result showed that the PCE of the devices was improved with the increase of dipping time. In addition, an increase of annealing time induces an enhancement of the perovskite properties. Furthermore, the as-fabricated perovskite solar cell dipped and annealed for 10 min exhibited the highest power conversion efficiency of 4.8% with a short circuit current density of 16.16 mA cm, an open circuit voltage of 0.84 V, and a fill factor of 35.50.
有机金属卤化物钙钛矿太阳能电池正成为最具竞争力的新兴技术之一。它们在10年内已达到22.7%的功率转换效率（PCE）。其高效率和简单的制造工艺使钙钛矿太阳能电池在第三代光伏领域成为有前景的参与者。沉积方法在高质量薄膜的制造中起着重要作用。在本文中，我们报告了基于将PbBr浸入MABr溶液后转化为MAPbBr钙钛矿的两步法制备甲基溴化铅（MAPbBr）薄膜。研究了浸渍时间和退火时间对器件光伏、光学和结构性能的影响。无机膜在有机溶液中的浸渍时间处理为30秒至15分钟。所得结果表明，器件的PCE随着浸渍时间的增加而提高。此外，退火时间的增加会导致钙钛矿性能增强。此外，浸渍并退火10分钟的制备好的钙钛矿太阳能电池表现出最高功率转换效率4.8%，短路电流密度为16.16 mA/cm，开路电压为0.84 V，填充因子为35.50。
