期刊
ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 33, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202203898
关键词
activation energy; additive; crystallization kinetics; metal-organic frameworks; perovskite solar cells
类别
资金
- National Natural Science Foundation of China [22072034, 22001050, 21873025]
- Natural Science Foundation of Heilongjiang Youth Fund [YQ2021B002]
- China Postdoctoral Science Foundation [2020T130147, 2020M681084]
- Postdoctoral Foundation of Heilongjiang Province [LBH-Z19059]
A brand new strategy of using metal-organic frameworks (MOFs) to improve the volatility and arrangement of small organic molecule additives in perovskite solar cells is proposed. The MOFs help produce superior perovskite films with enhanced stability and efficiency.
A brand new strategy to improve the volatility and disordered arrangement of small organic molecule additives within doped perovskite solar cells through the construction of metal-organic frameworks (MOFs) is proposed. The Zn-TTB, self-assembling from Zn2+ and 1-(triazol-1-ly)-4-tetrazol-5-ylmethyl)benzene (TTB), inherits and arranges triazole and tetrazole groups and forms a long-chain structure surrounding metal nodes. The perovskite precursors grow along with the skeleton of Zn-TTB and produce a macromolecular intermediate phase via the MOFs-perovskite interconnection, subsequently forming superior perovskite films with enhanced stability with respect to molecular additives, as evidenced by in situ thermogravimetry-Fourier transform infrared spectroscopy measurements. Thermal analyses suggest MOF-doping increases degradation activation energies by up to >174.01 kJ mol(-1) compared to the reference sample (162.45 kJ mol(-1)). Zn-TTB-modified devices exhibit promising efficiencies (up to 23.14%) and operational stability in unencapsulated state, even under constant solar light illumination.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据