MOFs在钙钛矿太阳能电池中的应用

钙钛矿太阳能电池(Perovskite solar cells, PSCs)因其迅速发展的能量转换效率而备受关注.提高PSCs性能特别是稳定性仍是人们研究的热点.金属有机框架(Metal-organic frameworks, MOFs)因其高比表面积的孔隙结构、功能结构可设计性强等优点,被应用在钙钛矿太阳能电池中,表现出优异的性能.总结了MOFs在调控钙钛矿的结晶、钝化缺陷、提高载流子的迁移率和其他功能方面的研究,并提出了目前PSCs研究中MOFs存在的卡脖子问题及可优化的方向,对进一步提高MOFs在增强PSCs器件的效率和稳定性方面的价值具有重要意义.     

Carbazole Based Anionic MOF for Proton Conductivity

A non-interpenetrated anionic In-MOF(FJU-302)based on a linear H2 bpdc and an angled H2 cdc as dual-ligands was characterized by FT-IR,TGA and X-ray single-crystal/powder diffraction.FJU-302 crystallizes in the monoclinic system and I4₁/amd space group with a=27.1274(8),b=27.1274(8),c=29.788(3)?,V=21921(2)?³,Z=16,M_r=608.32,D_c=0.737 g/cm³,F(000)=4848,μ(Cu Kα)=3.659 mm^–1,R=0.0800 and wR=0.1911 for 5703 observed reflections(I>2s(I)),and R=0.1470 and w R=0.2342 for all data.In this work,a carbazole based anionic In-MOF(FJU-302)was designed and synthesized,and the proton conductivity from subzero temperature(–30℃)to 70℃ was measured without additional humidity.FJU-302 presents a max proton conductivity of 6.47×10^–4 S·cm^–1 at 70℃,and it can maintain 5.88×10^–7 S·cm^–1 at–30℃.This work reports a first carbazole based MOF for proton conductivity at subzero temperature conditions.