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Self-Assembled UV Photodetector Made by Direct Epitaxial GaN Growth on Graphene
- Source :
- ACS Applied Materials & Interfaces, ACS Applied Materials & Interfaces, 2018, 10 (22), pp.18857-18862. ⟨10.1021/acsami.8b01194⟩, ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2018, 10 (22), pp.18857-18862. ⟨10.1021/acsami.8b01194⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- Hybrid systems based on the combination of crystalline bulk semiconductors with 2D crystals are identified as promising heterogeneous structures for new optoelectronic applications. The direct integration of III–V semiconductors on 2D materials is very attractive to make practical devices but the preservation of the intrinsic properties of the underlying 2D materials remains a challenge. In this work, we study the direct epitaxy of self-organized GaN crystals on graphene. We demonstrate that severe metal–organic chemical vapor deposition growth conditions of GaN (chemically aggressive precursors and high temperatures) are not detrimental to the structural quality and the charge carrier mobility of the graphene base plane. Graphene can therefore be used both as an efficient sensitive material and as a substrate for GaN epitaxy to make a self-assembled UV photodetector. A responsivity as high as 2 A W–1 is measured in the UV-A range without any further postprocessing compared to simple deposition of contact...
- Subjects :
- 010302 applied physics
[PHYS]Physics [physics]
Materials science
business.industry
Graphene
Photodetector
Gallium nitride
02 engineering and technology
Chemical vapor deposition
021001 nanoscience & nanotechnology
Epitaxy
01 natural sciences
law.invention
Responsivity
chemistry.chemical_compound
Semiconductor
chemistry
law
0103 physical sciences
Optoelectronics
General Materials Science
Metalorganic vapour phase epitaxy
0210 nano-technology
business
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- Language :
- English
- ISSN :
- 19448244 and 19448252
- Database :
- OpenAIRE
- Journal :
- ACS Applied Materials & Interfaces, ACS Applied Materials & Interfaces, 2018, 10 (22), pp.18857-18862. ⟨10.1021/acsami.8b01194⟩, ACS Applied Materials & Interfaces, Washington, D.C. : American Chemical Society, 2018, 10 (22), pp.18857-18862. ⟨10.1021/acsami.8b01194⟩
- Accession number :
- edsair.doi.dedup.....c8e10de409a0161f3686af9837ed75e4