Fabrication and characteristics of flexible normally-off AlGaN/GaN HEMTs

Autor: Runze Lin, Desheng Zhao, Guohao Yu, Xiaoyan Liu, Dongdong Wu, Erdan Gu, Xugao Cui, Ran Liu, Baoshun Zhang, Pengfei Tian
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: AIP Advances, Vol 10, Iss 10, Pp 105317-105317-6 (2020)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0025587
Popis: In this paper, we present a method for removing a high electron mobility transistor (HEMT) silicon substrate using mechanical grinding and deep silicon etching technology and successfully transferred the epitaxial wafer to a PET substrate to achieve the flexible normally-off HEMT. By testing the output characteristics and transfer characteristics of the Si-substrate HEMT and PET-substrate HEMT, we have demonstrated that the PET-substrate HEMT has excellent performance and successfully achieved the mechanical flexibility. Furthermore, we analyzed the physical mechanisms of the change in PET-substrate and Si-substrate HEMT characteristics, as well as flexible HEMT performance under bent and flattened states. The flexible HEMT array demonstrates significant potential in integration with other flexible devices, such as GaN-based micro-LED arrays.
Databáze: Directory of Open Access Journals