Volume 62, Issue 45 e202309416
Communication

Building Block-Inspired Hybrid Perovskite Derivatives for Ferroelectric Channel Layers with Gate-Tunable Memory Behavior

Haojie Xu

Haojie Xu

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Fapeng Sun

Fapeng Sun

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Wuqian Guo

Wuqian Guo

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

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Shiguo Han

Shiguo Han

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

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Yi Liu

Yi Liu

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

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Qingshun Fan

Qingshun Fan

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

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Liwei Tang

Liwei Tang

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Wei Liu

Prof. Wei Liu

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

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Prof. Junhua Luo

Prof. Junhua Luo

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian, 350108 P. R. China

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Prof. Zhihua Sun

Corresponding Author

Prof. Zhihua Sun

State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 P. R. China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian, 350108 P. R. China

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First published: 21 September 2023
Citations: 9

Graphical Abstract

A building block assembling method allows a series of ferroelectric semiconductors of 2D hybrid perovskites to be constructed. The resulting species have unprecedent gate-tunable memory behaviors potentially boosting future non-volatile memory applications.

Abstract

Ferroelectric photovoltaics driven by spontaneous polarization (Ps) holds a promise for creating the next-generation optoelectronics, spintronics and non-volatile memories. However, photoactive ferroelectrics are quite scarce in single homogeneous phase, owing to the severe Ps fatigue caused by leakage current of photoexcited carriers. Here, through combining inorganic and organic components as building blocks, we constructed a series of ferroelectric semiconductors of 2D hybrid perovskites, (HA)2(MA)n-1PbnBr3n+1 (n=1–5; HA=hexylamine and MA=methylamine). It is intriguing that their Curie temperatures are greatly enhanced by reducing the thickness of inorganic frameworks from MAPbBr3 (n=∞, Tc=239 K) to n=2 (Tc=310 K, ΔT=71 K). Especially, on account of the coupling of room-temperature ferroelectricity (Ps≈1.5 μC/cm2) and photoconductivity, n=3 crystal wafer was integrated as channel field effect transistor that shows excellent a large short-circuit photocurrent ≈19.74 μA/cm2. Such giant photocurrents can be modulated through manipulating gate voltage in a wide range (±60 V), exhibiting gate-tunable memory behaviors of three current states (“-1/0/1” states). We believe that this work sheds light on further exploration of ferroelectric materials toward new non-volatile memory devices.

Data Availability Statement

Research data are not shared.

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