发光学报2024，Vol.45Issue(8)：1232-1246,15.DOI:10.37188/CJL.20240123
二维半导体的相干声学声子研究进展
Research Progress of Coherent Acoustic Phonons in Two-dimensional Semiconductors
摘要
Abstract
The coherent acoustic phonons generated by femtosecond laser pulse excitation of thin-film materials can obtain non-destructive interface structure characteristics of light-emitting materials and devices.It is important for non-destructive testing and imaging of functional interfaces of opto-electronic devices.Compared with traditional metal thin-film photoacoustic transducers with thermoelastic mechanisms,two-dimensional semiconductor films own the advantag-es of broad spectrum absorption,atomic-level surface flatness,and robust control of the layer number.During the inter-action of femtosecond laser pulse and two-dimensional semiconductor,coherent acoustic phonon oscillation can be gen-erated,which set a foundation for further launching ultrafast acoustic pulses to extract interface information.This should be widely applicable for nondestructive evaluation of defect distribution,mechanical properties,and interface quality of light-emitting devices.In this paper,we introduce the research progress of coherent acoustic phonons in two-dimension-al semiconductors and overlook the scientific significance of ultrafast opto-acoustic measurement technique.关键词
二维半导体/异质界面/相干声学声子Key words
two-dimensional semiconductor/hetero-interface/coherent acoustic phonons分类
数理科学引用本文复制引用
许文雄,张何,崔乾楠,徐春祥..二维半导体的相干声学声子研究进展[J].发光学报,2024,45(8):1232-1246,15.基金项目
国家自然科学基金(62335003,61704024,61821002,61904082) （62335003,61704024,61821002,61904082）
江苏省自然科学基金(BK20222007)Supported by National Natural Science Foundation of China(62335003,61704024,61821002,61904082) （BK20222007）
The Natural Science Foundation of Jiangsu Province(BK20222007) （BK20222007）
