Homochiral Nickel Nitrite ABX3 (X = NO2−) Perovskite Ferroelectrics,Journal of the American Chemical Society

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Homochiral Nickel Nitrite ABX3 (X = NO2−) Perovskite Ferroelectrics
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-03-31 , DOI: 10.1021/jacs.0c02580
Bin-Bin Deng ₁ , Chu-Chu Xu ₁ , Ting-Ting Cheng ₁ , Yi-Ting Yang ₁ , Yan-Ting Hu ₁ , Pan Wang ₁ , Wen-Hui He ₁ , Meng-Juan Yang ₁ , Wei-Qiang Liao ₁

Affiliation

Chiral organic-inorganic perovskites (COIPs) have recently attracted increasing interest due to their unique inherent chirality and potential applications in next-generation optoelectronic and spintronic devices. However, COIP ferroelectrics are very sparse. In this paper, for the first time, we present the nickel-nitrite ABX3 COIP ferroelectrics, [R- and S-N-fluoromethyl-3-quinuclidinol]Ni(NO2)3 ([R- and S-FMQ]Ni(NO2)3), where the X-site is the rarely seen NO2- bridging ligand. [R- and S-FMQ]Ni(NO2)3 display mirror-relationship in the crystal structure and the vibrational circular dichroism (VCD) signal. It is emphasized that [R- and S-FMQ]Ni(NO2)3 show splendid ferroelectricity with both an extremely high phase-transition point of 405 K and spontaneous polarization of 12 μC/cm2. To our knowledge, [R- and S-FMQ]Ni(NO2)3 are the first examples of nickel-nitrite based COIP ferroelectrics. This finding expands the COIP family and throws lights on exploring high-performance COIP ferroelectrics.

中文翻译：

同手性亚硝酸镍 ABX3 (X = NO2−) 钙钛矿铁电体

手性有机-无机钙钛矿（COIPs）由于其独特的固有手性和在下一代光电和自旋电子器件中的潜在应用，最近引起了越来越多的兴趣。然而，COIP 铁电体非常稀少。在本文中，我们首次介绍了镍-亚硝酸盐 ABX3 COIP 铁电体，[R- 和 SN-氟甲基-3-奎宁醇]Ni(NO2)3 ([R- 和 S-FMQ]Ni(NO2)3 )，其中 X 位点是罕见的 NO2-桥连配体。[R-和S-FMQ]Ni(NO2)3 在晶体结构和振动圆二色性 (VCD) 信号中显示出镜像关系。需要强调的是，[R-和S-FMQ]Ni(NO2)3 显示出出色的铁电性，具有极高的 405 K 相变点和 12 μC/cm2 的自发极化。据我们所知，[R-和S-FMQ]Ni(NO2)3 是镍-亚硝酸盐基 COIP 铁电体的第一个例子。这一发现扩展了 COIP 系列，并为探索高性能 COIP 铁电体提供了线索。

更新日期：2020-03-31

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