气候变化领域集成服务门户(CCPortal): Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites

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DOI	10.1021/acsami.8b21579
	Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites
	Zhang Q.; Solanki A.; Parida K.; Giovanni D.; Li M.; Jansen T.L.C.; Pshenichnikov M.S.; Sum T.C.
发表日期	2019
ISSN	19448244
起始页码	13523
结束页码	13532
卷号	11 期号:14
英文摘要	Ruddlesden-Popper (RP) halide perovskites are the new kids on the block for high-performance perovskite photovoltaics with excellent ambient stability. The layered nature of these perovskites offers an exciting possibility of harnessing their ferroelectric property for photovoltaics. Adjacent polar domains in a ferroelectric material allow the spatial separation of electrons and holes. Presently, the structure-function properties governing the ferroelectric behavior of RP perovskites are an open question. Herein, we realize tunable ferroelectricity in 2-phenylethylammonium (PEA) and methylammonium (MA) RP perovskite (PEA) 2 (MA) -rfnet- 1 Pb n I 3n+1 . Second harmonic generation (SHG) confirms the noncentrosymmetric nature of these polycrystalline thin films, whereas piezoresponse force microscopy and polarization-electric field measurements validate the microscopic and macroscopic ferroelectric properties. Temperature-dependent SHG and dielectric constant measurements uncover a phase transition temperature at around 170 °C in these films. Extensive molecular dynamics simulations support the experimental results and identified the correlated reorientation of MA molecules and ion translations as the source of ferroelectricity. Current-voltage characteristics in the dark reveal the persistence of hysteresis in these devices, which has profound implications for light-harvesting and light-emitting applications. Importantly, our findings disclose a viable approach for engineering the ferroelectric properties of RP perovskites that may unlock new functionalities for perovskite optoelectronics. Copyright American Chemical Society.
英文关键词	and molecular simulation; ferroelectricity; polarization-electric field; Ruddlesden-Popper perovskites; second harmonic generation
scopus关键词	Current voltage characteristics; Electric fields; Ferroelectric films; Ferroelectric materials; Harmonic generation; Light emission; Molecular dynamics; Nonlinear optics; Perovskite; Polarization; Scanning probe microscopy; Dielectric-constant measurements; Ferroelectric behavior; Ferroelectric property; Molecular dynamics simulations; Molecular simulations; Piezoresponse force microscopy; Polycrystalline thin film; Ruddlesden-Popper; Ferroelectricity
来源期刊	ACS Applied Materials and Interfaces
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176448
作者单位	Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore; School of Material Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, Netherlands
推荐引用方式 GB/T 7714	Zhang Q.,Solanki A.,Parida K.,et al. Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites[J],2019,11(14).
APA	Zhang Q..,Solanki A..,Parida K..,Giovanni D..,Li M..,...&Sum T.C..(2019).Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites.ACS Applied Materials and Interfaces,11(14).
MLA	Zhang Q.,et al."Tunable Ferroelectricity in Ruddlesden-Popper Halide Perovskites".ACS Applied Materials and Interfaces 11.14(2019).