High performance planar p-i-n perovskite solar cells based on a thin Alq(3) cathode buffer layer.

High performance planar p-i-n perovskite solar cells based on a thin Alq(3) cathode buffer layer.
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基于薄 Alq3 阴极缓冲层的高性能平面 p-i-n 钙钛矿太阳能电池

DOI:
10.1039/c8ra01633j
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发表时间:
2018-04-27
期刊:
影响因子:
3.9
通讯作者:
Song, Qunliang
Song, Qunliang
中科院分区:
化学3区
文献类型:
--
作者:
Chen, Lijia;Wang, Gang;Niu, Lianbin;Yao, Yanqing;Guan, Yunxia;Cui, Yuting;Song, Qunliang

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在ITO/PEDOT:PSS/CH_3NH_3PbI_3(Cl)/PCBM/Alq_3/Ag结构的p-i-n型钙钛矿太阳能电池中,成功地引入了Al(8-羟基喹啉)作为薄阴极缓冲层(CBL)。由于引入了薄Alq 3 CBL,已经实现了高性能的平面PSC,填充因子(FF)为72%,最大功率转换效率(PCE)为14.22%。PCE值比不含Alq 3 CBL的参考器械高约29%。关于交流阻抗谱和瞬态光电流测量的结果,PCE的这种显着的改善主要归因于Alq 3引起的更好的电荷提取在阴极,这是通过减少PCBM和Ag之间的电荷积累引起的。
As a thin cathode buffer layer (CBL) tris-(8-hydroxyquinoline), aluminum (Alq3) is successfully introduced into the planar p-i-n perovskite solar cells (PSC) between the PCBM layer and cathode with a device structure of ITO/PEDOT:PSS/CH3NH3PbI3(Cl)/PCBM/Alq3/Ag. Due to the as-introduced thin Alq3 CBL, a high performance planar PSC has been achieved with a fill factor (FF) of 72% and maximum power conversion efficiency (PCE) of 14.22%. The PCE value is approximately 29% higher than that of the reference device without Alq3 CBL. Concerning the results of AC impedance spectra and transient photocurrent measurements, such a remarkable improvement of PCE is mainly attributed to the Alq3-caused better charge-extraction at the cathode, which is induced by reducing charge accumulation between PCBM and Ag.
DOI: 10.1126/science.aad1015
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