Controlled growth of perovskite microplates arrays for functional optoelectronics
- Authors
- Choi, Won Young; Chang, Won Jun; Jang, Suhee; Kim, Minjoo; Park, Won Il
- Issue Date
- May-2022
- Publisher
- Elsevier B.V.
- Keywords
- Gas-solid intercalation; Heterophase; Perovskite microplate; Solvent evaporation crystallization; Uniaxially aligned
- Citation
- Current Applied Physics, v.37, pp.27 - 32
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Current Applied Physics
- Volume
- 37
- Start Page
- 27
- End Page
- 32
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/138715
- DOI
- 10.1016/j.cap.2022.02.007
- ISSN
- 1567-1739
- Abstract
- In this study, a novel and facile route was utilized to synthesize methylammonium lead iodide (MAPbI3) perovskite microplate arrays with uniform morphology and predefined locations. Initially, large-area single-crystalline lead iodide (PbI2) thin sheets were synthesized through a solvent evaporation crystallization method for synthesizing PbI2 thin sheets. These PbI2 sheets were then employed as a seed layer to grow uniaxially aligned arrays of PbI2 microplates through lithographically defined microscale windows in a polymeric film. Thereafter, the PbI2 microplates were further intercalated with methylammonium iodide (MAI) to produce perovskite crystals. Structural and optical characterizations showed that the synthesized materials have a distinct heterojunction structures consisting of MAPbI3 perovskite microplates arrays and the underlying PbI2 thin sheet layer. The two-step process reported herein, which involves the uniaxial growth of PbI2 microplates and their conversion to MAPbI3 perovskite microplates with little dimensional change offers a new pathway for the fabrication of materials for integrated electronic and optoelectronic systems.
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