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在狭窄的温度范围内的三态介电切换在异胺酸中,这是一种具有极相的单维矿

Katarzyna Fedoruk-Piskorska¹, Jan K Zaręba², Szymon J Zelewski¹

¹Department of Experimental Physics, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.

ACS applied materials & interfaces

|May 22, 2024

概括

研究人员发现了一种新的三态介电切换材料 (CH3) 2C(H) NH3) PbI3 (ISOPrPbI3),为电子设备提供了增强的功能. 这种新型的有机-无机矿混合体在狭窄的温度范围内表现出不同的介电状态.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
晶体学晶体学是指结晶学.

背景情况:

混合有机-无机矿 (HOIPs) 通常显示二元介电切换.
非二进制切换,就像三态切换一样,提高了先进应用的材料多功能性.
现有的材料往往在介电状态之间有很大的热间隙,限制了实际使用.

研究的目的:

发现和描述一种具有三态介电切换的材料.
识别一种具有两个可逆的,第一阶段过渡和最小热歇斯底里的材料.
探索新型矿在非二进制介电切换应用中的潜力.

主要方法:

一个一维的化矿矿的合成和表征, (CH3) 2C(H) NH3) PbI3 (ISOPrPbI3).
介电光谱学用于观察狭窄温度范围内的三态切换 (约. 45 K) 的时间.
热流实验和第二波生成 (SHG) 测量以确定相位特性 (极性,中心对称性).
发光研究,以分析发射特征.

主要成果:

ISOPrPbI3 证明了高效的三态介电切换,在介电电容率上有明显的阶段式变化.
该材料在狭窄的热范围内表现出两种可逆的第一阶相变.
证实了第三阶段的极性 (低于266 K) 和第二阶段和第三阶段的非中心对称性.
观察到联合宽带和狭窄发光辐射.

结论:

ISOPrPbI3是用于三态介电切换的有希望的材料,克服了以前材料的局限性.
它的特性为开发先进的非二进制介电可切换材料铺平了道路.
这些发现扩大了混合有机-无机矿在电子和光子学中的功能可能性.

关键词:

在ISOPrPbI3中使用.电介介介质的电压电路.非二进制的非二进制.阶段阶段阶段阶段的阶段.切换的切换切换的切换三个州的三个州.

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