title: Photon Driven Transformation of Cesium Lead Halide Perovskites from Few-Monolayer Nanoplatelets to Bulk Phase.
abstract: Influence of light exposure on cesium lead halide nanostructures has been explored. A discovery of photon driven transformation (PDT) in 2D CsPbBr3nanoplatelets is reported, in which the quantum-confined few-monolayer nanoplatelets will convert to bulk phase under very low irradiation intensity (≈20 mW cm-2). Benefiting from the remarkable emission color change during PDT, the multicolor luminescence photopatterns and facile information photo-encoding are established.
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.|State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210085, China.
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Li
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Sivaramapanicker
authors.initials: S
authors.lastname: Sreejith
authors.affiliation: Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Cao
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Zeng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Mihaiela Corina
authors.initials: MC
authors.lastname: Stuparu
authors.affiliation: Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Zeng
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.|Centre for Disruptive Photonic Technologies (CDPT), Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Handong
authors.initials: H
authors.lastname: Sun
keywords: cesium lead halide perovskites; photon driven transformation; photopatterns; quantum confinement