首页|Dual-Resistance of Ion Migration and Moisture Erosion via Hydrolytic Crosslinking of Siloxane Functionalized Poly(lonic Liquids)for Efficient and Stable Perovskite Solar Cells
Dual-Resistance of Ion Migration and Moisture Erosion via Hydrolytic Crosslinking of Siloxane Functionalized Poly(lonic Liquids)for Efficient and Stable Perovskite Solar Cells
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The inevitable ion migration that occurs within ionic polycrystalline perovskite film results in inferior long-term stability of perovskite solar cells(PVSCs)that cannot meet the commercial requirements.Here,a novel poly(ionic liquid)named poly-1-vinyl-3-propyl-trimethoxysilane imidazolium chloride(PImIL-SiO)is first introduced into perovskite to strengthen grain boundaries(GBs)and construct dual-functional bar-riers against internal ion migration and external mois-ture erosion for fabricating highly efficient and stable PVSCs.PImlL-SiO-containing imidazolium cations and pendant siloxane groups contribute to passivation of bulk defects and anchoring of GBs,which effectively hinders ion migration channels,thus reducing perov-skite film phase separation and device hysteresis.Furthermore,the intrinsically hydrophobic PImlL-SiO automatically forms a secondary protective barrier to endow the perovskite film with ultrahigh moi-sture corrosion resistance through the hydrolyzation reaction of siloxane with the permeated moisture.Consequently,the PImIL-SiO-modified PVSCs achieve a champion power conversion efficiency(PCE)of 22.46％,accompanied by excellent thermal and humid-ity stabilities where the non-encapsulated devices re-tain 87％of the initial PCE after aging at 85 ℃ for 250 h and＞85％of the initial PCE over 1100 h in air with a relative humidity of 50-70％.
College of Chemistry and Chemical Engineering,Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031
National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education,Jiangxi Normal University,Nanchang 330022
国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金"Double Thousand Plan"Science and Technology Innovation Highend Talent Project of Jiangxi Province
NETL
NSTL
万方数据
