掺杂剂
材料科学
偶极子
兴奋剂
钙钛矿(结构)
化学物理
光电子学
结晶学
有机化学
化学
作者
Jianxing Xia,Ruiling Zhang,Junsheng Luo,Hua Gui Yang,Hongyu Shu,Haseeb Ashraf Malik,Zhongquan Wan,Yu Shi,Ke-Li Han,Ruilin Wang,Xin-Sheng Yao,Chunyang Jia
出处
期刊:Nano Energy
[Elsevier]
日期:2021-07-01
卷期号:85: 106018-106018
被引量:29
标识
DOI:10.1016/j.nanoen.2021.106018
摘要
Herein, a phenylamine cation based dopant (PHC) is demonstrated as the efficient and stable Spiro-OMeTAD single dopant within PSCs where the [Spiro-OMeTAD]•+ radical is primarily generated by intermolecular dipole moment derived charge transfer. Beyond the prominent advantages of PHC in hydrophobic and larger van der Waals radius of phenylamine cation as compared to Li+ ion which is favorable for stability of PSCs, the detailed findings reveals that it could also convert deep trap states to shallow tarp states via orbital shifting and hybridization for perovskite, in addition supplies the populated states near valence band and reinforced interface build-in filed (Ebi) which extremely restrain non-radiative recombination and enhances the carriers transfer with decreased barriers for hetero-junction interface. As a result, the efficiency of devices reaches 21.34% with ultrahigh FF of 80.24% versus 20.66% for the device based on Li-TFSI/t-BP bi-dopants which is the best efficiency of PSCs based on single dopant. Besides, the PHC based PSCs also displays much higher long-term stability up to 40 days under air ambient without encapsulation.
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