Atomic-scale probing of heterointerface phonon bridges in nitride semiconductor

Li，Yue Hui1,2; Qi，Rui Shi1,2; Shi，Ruo Chen1,2; Hu，Jian Nan3; Liu，Zhe Tong2; Sun，Yuan Wei1,2; Li，Ming Qiang2; Li，Ning2; Song，Can Li3; Wang，Lai4; Hao，Zhi Biao4; Luo，Yi4; Xue，Qi Kun3,5,6; Ma，Xu Cun3; Gao，Peng1,2,7,8

2022-02-22

10.1073/pnas.2117027119

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   影响因子和分区

0027-8424

1091-6490

Interface phonon modes that are generated by several atomic layers at the heterointerface play a major role in the interface thermal conductance for nanoscale high-power devices such as nitride-based high-electron-mobility transistors and light-emitting diodes. Here we measure the local phonon spectra across AlN/Si and AlN/Al interfaces using atomically resolved vibrational electron energy-loss spectroscopy in a scanning transmission electron microscope. At the AlN/Si interface, we observe various interface phonon modes, of which the extended and localized modes act as bridges to connect the bulk AlN modes and bulk Si modes and are expected to boost the phonon transport, thus substantially contributing to interface thermal conductance. In comparison, no such phonon bridge is observed at the AlN/Al interface, for which partially extended modes dominate the interface thermal conductivity. This work provides valuable insights into understanding the interfacial thermal transport in nitride semiconductors and useful guidance for thermal management via interface engineering.

Interface phonons Nitride semiconductor STEM-EELS

SCI

英语

NI论文

其他

National Natural Science Foundation of China[11974023];National Natural Science Foundation of China[52021006];National Natural Science Foundation of China[52125307];National Natural Science Foundation of China[61991443];National Natural Science Foundation of China[62004113];National Natural Science Foundation of China[T2188101];

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:000766924200005

NATL ACAD SCIENCES

BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;MATHEMATICS;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;PHARMACOLOGY & TOXICOLOGY;CHEMISTRY;PSYCHIATRY/PSYCHOLOGY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;AGRICULTURAL SCIENCES;ENGINEERING

2-s2.0-85124924660

Scopus

1.International Center for Quantum Materials,School of Physics,Peking University,Beijing,100871,China
2.Electron Microscopy Laboratory,School of Physics,Peking University,Beijing,100871,China
3.State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,100084,China
4.Beijing National Research Center for Information Science and Technology,Department of Electronic Engineering,Tsinghua University,Beijing,100084,China
5.Beijing Academy of Quantum Information Sciences,Beijing,100193,China
6.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
7.Interdisciplinary Institute of Light-Element Quantum Materials,Research Center for Light-Element Advanced Materials,Peking University,Beijing,100871,China
8.Collaborative Innovation Centre of Quantum Matter,Beijing,100871,China

Li，Yue Hui,Qi，Rui Shi,Shi，Ruo Chen,et al. Atomic-scale probing of heterointerface phonon bridges in nitride semiconductor[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2022,119(8).

Li，Yue Hui.,Qi，Rui Shi.,Shi，Ruo Chen.,Hu，Jian Nan.,Liu，Zhe Tong.,...&Gao，Peng.(2022).Atomic-scale probing of heterointerface phonon bridges in nitride semiconductor.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,119(8).

Li，Yue Hui,et al."Atomic-scale probing of heterointerface phonon bridges in nitride semiconductor".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 119.8(2022).