The combination of all-inorganic perovskites(PVSKs)and polymers allows for free-standing flexible optoelectronic devices.However,solubility difference of the PVSK precursors and concerns over the compatibility between...The combination of all-inorganic perovskites(PVSKs)and polymers allows for free-standing flexible optoelectronic devices.However,solubility difference of the PVSK precursors and concerns over the compatibility between polymer carriers and PVSKs imply a great challenge to incorporate different kinds of PVSKs into polymer matrices by the same manufacturing process.In this work,PVSK precursors are introduced into poly(2-hydroxyethyl acrylate)(PHEA)hydrogels in sequence,in which the PVSK-gel composites are achieved with full-color emissions by simply varying the precursor species.Moreover,it is found that CsBr has a higher interaction energy with the(111)plane of CsPbBr_(3)than the(110)plane;thus,the CsPbBr_(3)crystals with a shape of truncated cube and tetragon are observed during the CsPbBr_(3)-Cs_(4)PbBr_(6)phase transition over time.The PVSK-gel composites feature excellent bendability,elasticity,and stretchable deformation(tensile strain>500%),which allows for 3D printing emissive customized stereoscopic architectures with shape-memory features.展开更多
基金financially supported by the National Natural Science Foundation of China(grant 62004167)Key Research and Development Program of Shaanxi(2023GXLH091)+1 种基金Ningbo Natural Science Foundation(2022J061)Fundamental Research Funds for the Central Universities.
文摘The combination of all-inorganic perovskites(PVSKs)and polymers allows for free-standing flexible optoelectronic devices.However,solubility difference of the PVSK precursors and concerns over the compatibility between polymer carriers and PVSKs imply a great challenge to incorporate different kinds of PVSKs into polymer matrices by the same manufacturing process.In this work,PVSK precursors are introduced into poly(2-hydroxyethyl acrylate)(PHEA)hydrogels in sequence,in which the PVSK-gel composites are achieved with full-color emissions by simply varying the precursor species.Moreover,it is found that CsBr has a higher interaction energy with the(111)plane of CsPbBr_(3)than the(110)plane;thus,the CsPbBr_(3)crystals with a shape of truncated cube and tetragon are observed during the CsPbBr_(3)-Cs_(4)PbBr_(6)phase transition over time.The PVSK-gel composites feature excellent bendability,elasticity,and stretchable deformation(tensile strain>500%),which allows for 3D printing emissive customized stereoscopic architectures with shape-memory features.
