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单词 Piezotronics
释义

Piezotronics

中文百科

压电电子学

两端通过电极固定在柔性衬底上的压电电子器件的工作原理。由应变产生的沿着压电材料分布的压电电势将会使两端接触处肖特基势垒的高度沿相反的方向改变:负的压电电势提高局域势垒的高度,而正的压电电势降低局域势垒高度。这种对肖特基势垒的非对称调节作用就是压电电子效应。
压电材料一端被固定的压电电子器件的工作原理。诱发的压电电势分布与传统场效应晶体管中所施加的门电压类似,如图(b)所示。
显示压电效应,光激发和半导体特性三者之间相互耦合的示意图。

压电电子效应 是利用压电电势作为“门”电压对电荷载流子的传输特性进行调整和控制,可以用于制备新型的电子器件。压电电子学的基本原理是由佐治亚理工学院的王中林教授在2007年提出来的。 基于这个效应,已经制备了一系列的电子器件,包括压电电场栅控的场效应晶体管, 压电电场控制的二极管, 应变传感器, 力/流量传感器, 混合 场效应晶体管, 压电 逻辑门电路, 机电 存储器, 等等. 压电电子器件被认为是一个新的半导体器件种类。 压电电子学在传感器,人机交互技术,微机电系统,纳米机器人,以及有源柔性电子学等领域都可能具有重大的应用前景。

英语百科

Piezotronics 压电电子学

Working mechanism for piezotronic devices with two ends fixed with electrodes on a flexible substrate.  This asymmetric tuning of the Schottky barrier height is the piezotronic effect.
Working mechanism for piezoelectric devices with one end of the piezoelectric material is fixed. The induced piezopotential distribution is similar to the applied gate voltage in a traditional field-effect transistor, as shown in (b).
Schematic diagram showing the three-way coupling among piezoelectricity, photoexcitation and semiconductor.

Piezotronics effect is using the piezoelectric potential (piezopotential) created in materials with piezoelectricity as a “gate” voltage to tune/control the charge carrier transport properties for fabricating new devices. Neil A Downie showed how simple it was to build simple demonstrations on a macro-scale using a sandwich of piezoelectric material and carbon piezoresistive material to make an FET-like amplifying device and put it in a book of science projects for students in 2006. The fundamental principle of piezotronics was introduced by Prof. Zhong Lin Wang at Georgia Institute of Technology in 2007 . A series of electronic devices have been demonstrated based on this effect, including piezopotential gated field-effect transistor, piezopotential gated diode, strain sensors, force/flow sensors, hybrid field-effect transistor, piezotronic logic gates, electromechanical memories, etc. Piezotronic devices are regarded as a new semiconductor-device category. Piezotronics is likely to have important applications in sensor, human-silicon technology interfacing, MEMS, nanorobotics and active flexible electronics.

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更新时间:2025/6/18 7:41:02