Efficiency enhancement of perovskite solar cells with a buffer layer

Meng-Cheng Yeh, S. Su, Wen-Kai Lin, Jhih-Yung Chen, M. Yokoyama
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引用次数: 1

Abstract

The perovskite solar cell using solvent treatment on active layer and a thin buffer layer added was fabricated and characterized. The morphology of MAPM3 active layer agglomerates owing to methylbenzene treatment and the perovskite solar cell shows an increased short circuit current density (Jsc). An efficient buffer layer, the 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBi), which enhances device performance by forming well interfacial contact and restraining the hole from transporting to the cathode. The optimized perovskite solar cell showed an open circuit voltage (Voc) of 0.90 V, Jsc of 13.44 mA/cm2, fill factor (F.F.) of 64.69%, and power conversion efficiency (PCE) of 7.81% under simulated AM1.5G illumination of 100 mW/cm2, respectively.
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用缓冲层提高钙钛矿太阳能电池的效率
采用溶剂处理的方法制备了活性层加薄缓冲层的钙钛矿太阳能电池并对其进行了表征。经甲基苯处理后,MAPM3活性层形貌发生团聚,钙钛矿太阳能电池的短路电流密度(Jsc)增大。一种高效的缓冲层,1,3,5-三(n -苯基苯并咪唑-2-基)苯(TPBi),通过形成良好的界面接触和抑制空穴向阴极转移来提高器件性能。优化后的钙钛矿太阳能电池在100mw /cm2的AM1.5G光照下,开路电压(Voc)为0.90 V, Jsc为13.44 mA/cm2,填充系数(F.F.)为64.69%,功率转换效率(PCE)为7.81%。
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