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author:

Li, Titao (Li, Titao.) [1] (Scholars:李悌涛) | Lu, Yaoping (Lu, Yaoping.) [2] | Chen, Zuxin (Chen, Zuxin.) [3]

Indexed by:

Scopus SCIE

Abstract:

The ultra-wide bandgap (similar to 6.2 eV), thermal stability and radiation tolerance of AlN make it an ideal choice for preparation of high-performance far-ultraviolet photodetectors (FUV PDs). However, the challenge of epitaxial crack-free AlN single-crystalline films (SCFs) on GaN templates with low defect density has limited its practical applications in vertical devices. Here, a novel preparation strategy of high-quality AlN films was proposed via the metal organic chemical vapor deposition (MOCVD) technique. Cross-sectional transmission electron microscopy (TEM) studies clearly indicate that sharp, crack-free AlN films in single-crystal configurations were achieved. We also constructed a p-graphene/i-AlN/n-GaN photovoltaic FUV PD with excellent spectral selectivity for the FUV/UV-C rejection ratio of >10(3), a sharp cutoff edge at 206 nm and a high responsivity of 25 mA/W. This work provides an important reference for device design of AN materials for high-performance FUV PDs.

Keyword:

AlN far-ultraviolet photodetection heteroepitaxy MOCVD single crystalline films

Community:

  • [ 1 ] [Li, Titao]Fuzhou Univ, Jinjiang Joint Inst Microelect, Coll Phys & Informat Engn, Fuzhou 350108, Peoples R China
  • [ 2 ] [Lu, Yaoping]Fuzhou Univ, Jinjiang Joint Inst Microelect, Coll Phys & Informat Engn, Fuzhou 350108, Peoples R China
  • [ 3 ] [Chen, Zuxin]South China Normal Univ, Sch Semicond Sci & Technol, Foshan 528225, Peoples R China

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Source :

NANOMATERIALS

ISSN: 2079-4991

Year: 2022

Issue: 23

Volume: 12

5 . 3

JCR@2022

4 . 4 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:91

JCR Journal Grade:1

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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