| Title | Cathodoluminescence nano-characterization of individual GaN/AlN quantum disks embedded in nanowires |
| Authors | Sheng, Bowen Bertram, Frank Schmidt, Gordon Veit, Peter Mueller, Marcus Wang, Ping Sun, Xiaoxiao Qin, Zhixin Shen, Bo Wang, Xinqiang Christen, Juergen |
| Affiliation | Peking Univ, Nanooptoelect Frontier Ctr, Minist Educ NFC MOE, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China Otto von Guericke Univ, Inst Phys, D-39106 Magdeburg, Germany |
| Keywords | GAN EMISSION EXCITON GROWTH STRAIN |
| Issue Date | 28-Sep-2020 |
| Publisher | APPLIED PHYSICS LETTERS |
| Abstract | AlN/GaN/AlN quantum disks (Q-disks) embedded in self-assembled hexagonally shaped GaN nanowires have been grown on the Si (111) substrate by plasma-assisted molecular beam epitaxy. To correlate the structural and optical properties of individual Q-disks inside the nanowire, highly spatially resolved cathodoluminescence (CL) spectroscopy in a scanning transmission electron microscope has been performed at 18K. CL spectrum linescans along a single nanowire clearly identify the emission from the GaN base around 354nm as well as two recombination channels at 347nm and 330nm directly correlated with the AlN/GaN/AlN Q-disk. A detailed characterization of these individual quantum objects is presented. |
| URI | http://hdl.handle.net/20.500.11897/592702 |
| ISSN | 0003-6951 |
| DOI | 10.1063/5.0024110 |
| Indexed | SCI(E) |
| Appears in Collections: | 其他实验室 人工微结构和介观物理国家重点实验室 |
