| dc.contributor | 應物所 | en_US |
| dc.creator (作者) | 郭光宇 | zh_TW |
| dc.creator (作者) | Cai, Duanjun ; Kang, Junyong ; Guo, Guang-Yu | en_US |
| dc.date (日期) | 2009.07 | en_US |
| dc.date.accessioned | 24-Jan-2014 12:21:30 (UTC+8) | - |
| dc.date.available | 24-Jan-2014 12:21:30 (UTC+8) | - |
| dc.date.issued (上傳時間) | 24-Jan-2014 12:21:30 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/63523 | - |
| dc.description.abstract (摘要) | We present first-principles calculations of AlGaN/GaN superlattice, clarifying the microscopic origin of the light emission and revealing the effect of local polarization within the quantum well. Profile of energy band and distributions of electrons and holes demonstrate the existence of a main active site in the well responsible for the main band-edge light emission. This site appears at the position where the local polarization becomes zero. With charge injection, the calculated optical spectra show that the broadening of the band gap at the active site leads to the blueshift of emission wavelength. | en_US |
| dc.format.extent | 382638 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | Physical Review B, 80(4),045311 | en_US |
| dc.title (題名) | Microscopic origin of light emission from AlyGa1-yN/GaN superlattices: Band profile and active site | en_US |
| dc.type (資料類型) | article | en |
| dc.identifier.doi (DOI) | 10.1103/PhysRevB.80.045311 | - |
| dc.doi.uri (DOI) | http://dx.doi.org/10.1103/PhysRevB.80.045311 | - |
