Dual Triplet Sensitization Strategy for Efficient and Stable Triplet–Triplet Annihilation Upconversion Perovskite Solar Cells  

作　　者：Wangping Sheng Jia Yang Xiang Li Jiaqi Zhang Yang Su Yang Zhong Yanda Zhang Lingyun Gong Licheng Tan Yiwang Chen 

机构地区：[1]College of Chemistry and Chemical Engineering,Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031 [2]Institute of Advanced Scientific Research(iASR),Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education,Jiangxi Normal University,Nanchang 330022

出　　处：《CCS Chemistry》2023年第3期729-740,共12页中国化学会会刊（英文）

基　　金：This work was financially supported by the National Natural Science Foundation of China(NSFC)(grant nos.52063019,51973088,51833004,and U20A20128);the“Double Thousand Plan”Science and Technology Innovation High-end Talent Project of Jiangxi Province(grant no.jxsq2019201107).

摘　　要：The novel triplet–triplet annihilation(TTA)upconversion(UC)field of rubrene(Rub)and dibenzotetraphenylperiflanthene(DBP)sensitized by bulk metal halide perovskite,integrated with copper-2,3,9,10,16,17,23,24-octafluorophthalocyanine(F_(8)CuPc)as cosensitizer,have been investigated in perovskite solar cells(PVSCs)to minimize sub-bandgap photon transmission loss.The firm hydrogen bonding interaction(F…H–N between F_(8)CuPc and MA+),cation-πinteraction(MA+with Rub),and the hydrophobic characteristic of additives enable F_(8)CuPc:Rub:DBP dually-sensitized p-i-n PVSCs based on MAPbI_(3)and Cs_(0.05)(FA_(0.83)MA_(0.17))_(0.95)Pb(Br_(0.17)I_(0.83))_(3)absorbers to attain champion efficiencies of 20.83%and 21.51%,respectively.Furthermore,due to the excellent photochemical and thermal stability of F_(8)CuPc,the corresponding PVSCs can maintain nearly 80%of the original efficiencies exposed to air with 50∼70%relative humidity over 1100 h and N_(2)at 85℃for 300 h.

关 键 词：perovskite solar cells UPCONVERSION triplet-triplet annihilation cosensitizer 

分 类 号：TB34[一般工业技术—材料科学与工程]