III-nitride piezotronic/piezo-phototronic materials and devices
III-nitride piezotronic/piezo-phototronic materials and devices
复制标题
III族氮化物压电/压电光电子材料与器件
DOI：
10.1088/1361-6463/ab04d6
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hu Weiguo
中科院分区：
文献类型：
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作者：
Sha Wei;Zhang Jicai;Tan Shuxin;Luo Xiangdong;Hu Weiguo
得益于独特的非中心对称晶体结构，II-VI族和III-V族纤锌矿半导体，例如ZnO、AlN、GaN和InN，具有压电性质。压电效应和压电光电效应可以有效地调制/控制载流子的产生、输运、分离和复合等行为，通过对这些半导体的极化方向施加外部应力来控制界面处产生的压电极化电荷，从而形成压电势，作为“门”来调节和进一步改善半导体器件的性能。基于这些先进的性能，已经研究了大量的压电和压电光电器件和应用，如发光二极管，太阳能电池，传感器，人机界面，纳米发电机等，并建议与没有外部应变的情况相比，工作效率的显着提高。此外，压电和压电光电效应提供了一种方便和经济的方法来有效地缓解半导体器件的各种问题，而不是传统的方法，需要复杂的设计，高成本和长时间。本文主要介绍了压电和压电光电效应的基本物理机制、相关器件及其应用，以期为压电和压电光电效应的功能化应用提供科学指导。
Benefiting from the unique non-central symmetric crystal structure, groups II–VI and III–V wurtzite semiconductors, for example, ZnO, AlN, GaN, and InN, possess the piezoelectric property. Carrier behaviors, including generation, transport, separation, and recombination, can be effectively modulated/controlled by piezotronic and piezo-phototronic effects, that control the piezoelectric polarization charges generated at the interface via applying external stress on the polarization orientation of these semiconductors, and then form the piezopotential used as a'gate'to tune and further improve the performance of semiconductor devices. Based on these advanced properties, a large number of piezotronic and piezo-phototronic devices and applications have been researched, like light emitting diodes, solar cells, sensors, human–machine interfaces, nanogenerators, and so on, and suggest the dramatic improvement of operating efficiency compared to that with no external strain. Moreover, piezotronic and piezo-phototronic effects provide a convenient and economical method to effectively relieve various issues of semiconductor devices, instead of the traditional ways, requiring complicated design, high costs, and a long period of time. This brief review mainly concentrates on the fundamental physical mechanism and correlative devices and applications on emerging piezotronic and piezo-phototronic effects, and wishes to provide scientific guidance on potential functional applications for the future.