Oxygen doping in nickel oxide for highly efficient planar perovskite solar cells

Oxygen doping in nickel oxide for highly efficient planar perovskite solar cells
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氧化镍中的氧掺杂用于高效平面钙钛矿太阳能电池

DOI:
10.1039/c8ta00161h
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发表时间:
2018-03
影响因子:
11.9
通讯作者:
Liduo Wang
Liduo Wang
中科院分区:
材料科学2区
文献类型:
--
作者:
Guangda Niu;Siyu Wang;Jiangwei Li;Wenzhe Li;Liduo Wang

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目前,倒置钙钛矿太阳能电池的性能仍然低于正常结构的设备,由于钙钛矿和空穴传输层(NiO)之间的不完美的能带对准。在此,我们发现在薄膜制备过程中氧的存在可以降低NiO的费米能级,减少钙钛矿和NiO之间的能量失配。降低的失配有利于器件的VOC以及NiO和钙钛矿之间的电荷转移。此外,利用Cs-MA-FA混合离子基钙钛矿作为吸收剂可以增加钙钛矿太阳能电池的光响应范围并改善热稳定性和湿度稳定性。最后,我们实现了19.2%的倒置平面钙钛矿太阳能电池的稳定性能输出,没有任何滞后。
Currently the performance of inverted perovskite solar cells is still lower than that of normal structured devices, due to the imperfect band alignment between the perovskite and hole transport layer (NiO). Herein, we found that the presence of oxygen during film preparation could lower the Fermi level of NiO and decrease the energy mismatch between the perovskite and NiO. The decreased mismatch benefited the VOC of the devices as well as the charge transfer between NiO and the perovskite. In addition, the utilization of Cs–MA–FA mixed ion-based perovskites as absorbers could increase the light response range and improve the thermal and moisture stabilities of perovskite solar cells. Finally, we achieved a stable performance output of 19.2% for inverted planar perovskite solar cells without any hysteresis.
用于高性能传统钙钛矿太阳能电池的基于平面晕苯的低温、可溶液加工的有机电子传输层
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