Europium (II)‐Doped All‐Inorganic CsPbBr3 Perovskite Solar Cells with Carbon Electrodes,Solar RRL

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Europium (II)‐Doped All‐Inorganic CsPbBr3 Perovskite Solar Cells with Carbon Electrodes
Solar RRL ( IF 6.0 ) Pub Date : 2020-08-21 , DOI: 10.1002/solr.202000390
Santhosh Kumar Karunakaran _{1,

2} , Gowri Manohari Arumugam ₃ , Wentao Yang _{1,

2} , Sijie Ge _{1,

2} , Saqib Nawaz Khan _{1,

2} , Yaohua Mai ₃ , Xianzhong Lin _{1,

2} , Guowei Yang ₁

Affiliation

All‐inorganic perovskite of CsPbBr₃ thin‐films solar cells has attracted increasing interest in recent years due to its potential long‐term stability over the generally used hybrid perovskites. Herein, all‐inorganic CsPbBr₃ perovskites are doped with Eu²⁺ to enhance the efficiency of perovskite solar cells (PVSCs). The perovskite films exhibit a better crystallinity with smooth morphology after the introduction of rare‐earth elements. Hence, the hole‐transport layer‐free device with presence of Eu²⁺ and low‐cost carbon electrode achieves both enhanced efficiency and stability. In particular, the power conversion efficiency (PCE) enhances from 5.66% to 7.28% with high V_OC of 1.45 V by optimizing the doping concentration of Eu²⁺. In addition, the storage stability measurements reveal excellent performances of PCE without encapsulation in air with relative humidity of 70–80%. These results can pave changes in future inorganic PVSCs.

中文翻译：

Carbon掺杂碳电极的全无机CsPbBr3钙钛矿型太阳能电池

近年来，由于CsPbBr ₃薄膜太阳能电池的全无机钙钛矿相对于常用的杂化钙钛矿具有潜在的长期稳定性，因此引起了越来越多的关注。在此，所有无机CsPbBr ₃钙钛矿都掺有Eu ^2+，以增强钙钛矿太阳能电池（PVSC）的效率。引入稀土元素后，钙钛矿薄膜表现出更好的结晶度和平滑的形态。因此，具有Eu ²⁺和低成本碳电极的无空穴传输层器件可实现更高的效率和稳定性。特别地，功率转换效率（PCE）从5.66％提高对7.28％的高V _OC的1.45 V一定的优化Eu的掺杂浓度²⁺。此外，存储稳定性的测量结果表明PCE具有出色的性能，而没有封装在相对湿度为70-80％的空气中。这些结果可以为未来的无机PVSC铺平道路。

更新日期：2020-08-21

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