Perovskite single-crystal arrays have attracted intensive attention because of their great potentials for integrated optoelectronic devices.However,the traditional top-down lithography strategy requires complex proces...Perovskite single-crystal arrays have attracted intensive attention because of their great potentials for integrated optoelectronic devices.However,the traditional top-down lithography strategy requires complex processing and is detrimental to perovskite crystal structures,which is incompatible to directly pattern perovskite single crystals.Herein,we report a lithography-free method to realize the controllable growth of perovskite single-crystal arrays.Through introducing a printed hydrophilic-hydrophobic substrate into the crystallization system,the MAPbCl_(3) single-crystal arrays with precise location and uniform size are effectively fabricated.This method can be applied to prepare diverse perovskite single-crystal arrays,including MAPbBr_(3),CsPbCl_(3),CsPbBr_(3),Cs_(3)Cu_(2)I_(5),Cs_(3)Bi_(2)I_(9),and(BA)_(2)(MA)_(3)Pb_(4)I_(11).The perovskite single crystals can be selectively grown on the electrodes to fabricate ultraviolet photodetectors.The strategy demonstrates a facile approach to fabricate large-scale perovskite single-crystal arrays and opens a pathway to produce diverse perovskite optoelectronic devices.展开更多
基金supported financially by the National Key R&D Program of China(Nos.2018YFA0208501 and 2018YFA0703200)the National Natural Science Foundation of China(NSFC,Nos.91963212,52103236,51773206,21875260,and 51961145102[BRICS project])+2 种基金K.C.Wong Education Foundation,Beijing National Laboratory for Molecular Sciences(No.BNLMS-CXXM-202005)the China Postdoctoral Science Foundation(No.2021TQ0285)Outstanding Young Talent Research Fund of Zhengzhou University.
文摘Perovskite single-crystal arrays have attracted intensive attention because of their great potentials for integrated optoelectronic devices.However,the traditional top-down lithography strategy requires complex processing and is detrimental to perovskite crystal structures,which is incompatible to directly pattern perovskite single crystals.Herein,we report a lithography-free method to realize the controllable growth of perovskite single-crystal arrays.Through introducing a printed hydrophilic-hydrophobic substrate into the crystallization system,the MAPbCl_(3) single-crystal arrays with precise location and uniform size are effectively fabricated.This method can be applied to prepare diverse perovskite single-crystal arrays,including MAPbBr_(3),CsPbCl_(3),CsPbBr_(3),Cs_(3)Cu_(2)I_(5),Cs_(3)Bi_(2)I_(9),and(BA)_(2)(MA)_(3)Pb_(4)I_(11).The perovskite single crystals can be selectively grown on the electrodes to fabricate ultraviolet photodetectors.The strategy demonstrates a facile approach to fabricate large-scale perovskite single-crystal arrays and opens a pathway to produce diverse perovskite optoelectronic devices.
