Matches in SemOpenAlex for { <https://semopenalex.org/work/W4224021659> ?p ?o ?g. }
- W4224021659 abstract "We explore and systematically compare the morphological, structural and optical properties of GaN/(Al,Ga)N multiple quantum wells (MQWs) grown by plasma-assisted molecular beam epitaxy (PA-MBE) on freestanding GaN$(0001)$ and GaN$(000bar{1})$ substrates. Samples of different polarity are found to be comparable in terms of their morphological and structural perfection and exhibit essentially identical quantum well widths and Al content. Regardless of the crystal orientation, the exciton decay in the MQWs at 10 K is dominantly radiative and the photoluminescence (PL) energy follows the quantum confined Stark effect (QCSE) for different quantum well widths. A prominent free-to-bound transition involving interface shallow donors is, however, visible for the N-polar MQWs. At room-temperature, in contrast, the exciton decay in all samples is dominated by nonradiative recombination taking place at point defects, presumably Ca or V N located at the bottom QW interface. Remarkably, the N-polar MQWs exhibit a higher PL intensity and longer decay times than the Ga-polar MQWs at room-temperature. This improved internal quantum efficiency is attributed to the beneficial orientation of the internal electric field that effectively reduces the capture rate of minority carriers by interface trap states." @default.
- W4224021659 created "2022-04-19" @default.
- W4224021659 creator A5001307872 @default.
- W4224021659 creator A5017288960 @default.
- W4224021659 creator A5024577618 @default.
- W4224021659 creator A5040650840 @default.
- W4224021659 creator A5053351691 @default.
- W4224021659 creator A5072242182 @default.
- W4224021659 creator A5076444616 @default.
- W4224021659 creator A5089091392 @default.
- W4224021659 date "2022-04-15" @default.
- W4224021659 modified "2023-10-16" @default.
- W4224021659 title "Interface Recombination in Ga- and N-Polar GaN/(Al,Ga)N Quantum Wells Grown by Molecular Beam Epitaxy" @default.
- W4224021659 cites W1121853758 @default.
- W4224021659 cites W1523029481 @default.
- W4224021659 cites W1549511426 @default.
- W4224021659 cites W1617048730 @default.
- W4224021659 cites W1965522543 @default.
- W4224021659 cites W1965806803 @default.
- W4224021659 cites W1967267456 @default.
- W4224021659 cites W1971853368 @default.
- W4224021659 cites W1972506432 @default.
- W4224021659 cites W1973305070 @default.
- W4224021659 cites W1975317856 @default.
- W4224021659 cites W1976480671 @default.
- W4224021659 cites W1976965770 @default.
- W4224021659 cites W1977417292 @default.
- W4224021659 cites W1977591501 @default.
- W4224021659 cites W1979659814 @default.
- W4224021659 cites W1983747938 @default.
- W4224021659 cites W1984045121 @default.
- W4224021659 cites W1984645273 @default.
- W4224021659 cites W1985374545 @default.
- W4224021659 cites W1985644008 @default.
- W4224021659 cites W1987440117 @default.
- W4224021659 cites W1987639561 @default.
- W4224021659 cites W1989680219 @default.
- W4224021659 cites W1992284388 @default.
- W4224021659 cites W1993036377 @default.
- W4224021659 cites W1993852442 @default.
- W4224021659 cites W2000982735 @default.
- W4224021659 cites W2005071630 @default.
- W4224021659 cites W2005435779 @default.
- W4224021659 cites W2005810044 @default.
- W4224021659 cites W2011458774 @default.
- W4224021659 cites W2012848101 @default.
- W4224021659 cites W2019753628 @default.
- W4224021659 cites W2024848229 @default.
- W4224021659 cites W2026777610 @default.
- W4224021659 cites W2027593181 @default.
- W4224021659 cites W2028123345 @default.
- W4224021659 cites W2030222804 @default.
- W4224021659 cites W2030724864 @default.
- W4224021659 cites W2031596519 @default.
- W4224021659 cites W2033751795 @default.
- W4224021659 cites W2037560351 @default.
- W4224021659 cites W2041928478 @default.
- W4224021659 cites W2044923413 @default.
- W4224021659 cites W2047471022 @default.
- W4224021659 cites W2049754859 @default.
- W4224021659 cites W2050487076 @default.
- W4224021659 cites W2051238559 @default.
- W4224021659 cites W2052942051 @default.
- W4224021659 cites W2053308507 @default.
- W4224021659 cites W2054231798 @default.
- W4224021659 cites W2054362812 @default.
- W4224021659 cites W2056798331 @default.
- W4224021659 cites W2058479410 @default.
- W4224021659 cites W2059056415 @default.
- W4224021659 cites W2064388379 @default.
- W4224021659 cites W2066316750 @default.
- W4224021659 cites W2067507973 @default.
- W4224021659 cites W2071410183 @default.
- W4224021659 cites W2071960938 @default.
- W4224021659 cites W2073476650 @default.
- W4224021659 cites W2073640980 @default.
- W4224021659 cites W2076928532 @default.
- W4224021659 cites W2077708033 @default.
- W4224021659 cites W2078741246 @default.
- W4224021659 cites W2079903980 @default.
- W4224021659 cites W2082996737 @default.
- W4224021659 cites W2085995870 @default.
- W4224021659 cites W2086569599 @default.
- W4224021659 cites W2089752172 @default.
- W4224021659 cites W2095017070 @default.
- W4224021659 cites W2104071477 @default.
- W4224021659 cites W2105573592 @default.
- W4224021659 cites W2148557435 @default.
- W4224021659 cites W2171214326 @default.
- W4224021659 cites W2266815626 @default.
- W4224021659 cites W2284890595 @default.
- W4224021659 cites W2405320247 @default.
- W4224021659 cites W2511978713 @default.
- W4224021659 cites W2517072458 @default.
- W4224021659 cites W2538980357 @default.
- W4224021659 cites W2550802965 @default.
- W4224021659 cites W2552409399 @default.
- W4224021659 cites W2573930267 @default.
- W4224021659 cites W2592500783 @default.
- W4224021659 cites W2601843927 @default.