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- W4321375497 abstract "Metal modulation epitaxy (MME) is a technique in which metal beams (Al, Ga, In, and Mg) are switched on and off in short periods in an RF MBE system while a continuous nitrogen plasma beam is kept on. We systematically studied the effect of periodic duty cycling on the morphology, crystalline quality, Mg doping concentration, and electrical properties of GaN:Mg films grown by MME. When the metal shutter duty cycling is 20 s open/10 s close, the sample has smooth surface with clear steps even with Mg doping concentration higher than 1 × 1020 cm-3. The RMS roughness is about 0.5 nm. The FWHM of (002) XRD rocking curve is 230 arcsec and the FWHM of (102) XRD rocking curve is 260 arcsec. As result, a hole concentration of 5 × 1018 cm-3 and a resistivity of 1.5 Ω·cm have been obtained. The hole concentration increases due to the incorporation of surface accumulated Mg dopants into suitable Ga substitutional sites with minimal formation of compensatory defects." @default.
- W4321375497 created "2023-02-21" @default.
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- W4321375497 date "2023-02-20" @default.
- W4321375497 modified "2023-09-26" @default.
- W4321375497 title "The Effect of Periodic Duty Cyclings in Metal-Modulated Epitaxy on GaN:Mg Film" @default.
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- W4321375497 doi "https://doi.org/10.3390/ma16041730" @default.
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