Photon Driven Transformation of Cesium Lead Halide Perovskites from Few-Monolayer Nanoplatelets to Bulk Phase

Yue Wang; Xiaoming Li; Sivaramapanicker Sreejith; Fei Cao; Zeng Wang; Mihaiela Corina Stuparu; Haibo Zeng; Handong Sun

doi:10.1002/adma.201604110

Photon Driven Transformation of Cesium Lead Halide Perovskites from Few-Monolayer Nanoplatelets to Bulk Phase

Adv Mater. 2016 Dec;28(48):10637-10643. doi: 10.1002/adma.201604110. Epub 2016 Oct 7.

Authors

Yue Wang¹, Xiaoming Li^{2

3}, Sivaramapanicker Sreejith⁴, Fei Cao², Zeng Wang¹, Mihaiela Corina Stuparu⁴, Haibo Zeng², Handong Sun^{1

5}

Affiliations

¹ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
² Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
³ 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.
⁴ Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
⁵ Centre for Disruptive Photonic Technologies (CDPT), Nanyang Technological University, Singapore, 637371, Singapore.

PMID: 27714913
DOI: 10.1002/adma.201604110

Abstract

Influence of light exposure on cesium lead halide nanostructures has been explored. A discovery of photon driven transformation (PDT) in 2D CsPbBr₃ nanoplatelets 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.

Keywords: cesium lead halide perovskites; photon driven transformation; photopatterns; quantum confinement.