首页|Dual Triplet Sensitization Strategy for Efficient and Stable Triplet-Triplet Annihilation Upconversion Perovskite Solar Cells
Dual Triplet Sensitization Strategy for Efficient and Stable Triplet-Triplet Annihilation Upconversion Perovskite Solar Cells
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The novel triplet-triplet annihilation(TTA)upcon-version(UC)field of rubrene(Rub)and dibenzote-traphenylperiflanthene(DBP)sensitized by bulk metal halide perovskite,integrated with copper-2,3,9,10,16,17,23,24-octafluorophthalocyanine(F8CuPc)as cosensitizer,have been investigated in perovskite solar cells(PVSCs)to minimize sub-bandgap pho-ton transmission loss.The firm hydrogen bonding interaction(F.H-N between F8CuPc and MA+),cat-ion-π interaction(MA+with Rub),and the hydropho-bic characteristic of additives enable F8CuPc:Rub:DBP dually-sensitized p-i-n PVSCs based on MAPbl3 and Cs0.05(FA0.83MA0.17)0.95Pb(Br0.17I0.83)3 absor-bers to attain champion efficiencies of 20.83％and 21.51％,respectively.Furthermore,due to the excel-lent photochemical and thermal stability of F8CuPc,the corresponding PVSCs can maintain nearly 80％of the original efficiencies exposed to air with 50～70％relative humidity over 1100 h and N2 at 85 ℃ for 300 h.
perovskite solar cellsupconversiontriplet-triplet annihilationcosensitizer
College of Chemistry and Chemical Engineering,Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031
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
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the"Double Thousand Plan"Science and Technology Innovation Highend Talent Project of Jiangxi Province
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