Low-Dimensional Single-Cation Formamidinium Lead Halide Perovskites (FA(m)(+2)Pb(m)Br(3)(m)(+2)): From Synthesis to Rewritable Phase-Change Memory Film
- Authors
- Minh, Duong Nguyen; Nguyen, Lan Anh Thi; Trinh, Cong Tai; Oh, Changjun; Eom, Sangwon; Vu, Thanh Van; Choi, Jinwoo; Sim, Jae Hyun; Lee, Kwang-Geol; Kim, Jaeyong; Cho, Seong Chan; Lee, Sang Uck; Cimrova, Vera; Kang, Young Jong
- Issue Date
- Apr-2021
- Publisher
- John Wiley & Sons Ltd.
- Keywords
- formamidinium; lithography; perovskites; phase‐; change memory; single‐cation
- Citation
- Advanced Functional Materials, v.31, no.17, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Advanced Functional Materials
- Volume
- 31
- Number
- 17
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/138324
- DOI
- 10.1002/adfm.202011093
- ISSN
- 1616-301X
- Abstract
- Synthesis of 2D perovskites often demands long and bulky organic spacer cations, but they hamper optoelectronic properties of the resulting 2D perovskites. Novel low-dimensional single-cation perovskites with a general formula of FA(m)(+2)Pb(m)Br(3)(m)(+2) are prepared by using a quenching-assisted solution process, which leads to the wide dimensional control over 1D FA(3)PbBr(5) (m = 1), 2D FA(m)(+2)Pb(m)Br(3)(m)(+2) (m >= 2), and 3D FAPbX(3) (m = infinity) perovskites simply by changing the composition of precursors. In this case, formamidinium (FA) acts as both an A-site cation and spacer cation in FA(m)(+2)Pb(m)Br(3)(m)(+2). Unlike conventional 2D perovskites, FA(m)(+2)Pb(m)Br(3)(m)(+2) perovskites have (110) orientation. PVDF (poly(vinylidene fluoride)) preferentially stabilizes the low-dimensional FA(m)(+2)Pb(m)Br(3)(m)(+2) phases, which is utilized to fabricate the stable FA(m)(+2)Pb(m)Br(3)(m)(+2)-PVDF composite films. The phase transitions from 1D and 2D to 3D are investigated in response to various stimuli, including humidity, ultraviolet, oxygen, and solvents, are exploited for rewritable phase-change memory films.
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