| dc.contributor | 應物所 | en_US |
| dc.creator (作者) | 郭光宇 | zh_TW |
| dc.creator (作者) | Guo, Guang-Yu | en_US |
| dc.date (日期) | 2009.09 | en_US |
| dc.date.accessioned | 24-Jan-2014 12:21:16 (UTC+8) | - |
| dc.date.available | 24-Jan-2014 12:21:16 (UTC+8) | - |
| dc.date.issued (上傳時間) | 24-Jan-2014 12:21:16 (UTC+8) | - |
| dc.identifier.uri (URI) | http://nccur.lib.nccu.edu.tw/handle/140.119/63522 | - |
| dc.description.abstract (摘要) | We study the linear and nonlinear optical properties of wurtzite GaN under c-axial stress field, using density functional theory calculations. The fully structural optimization at each c-axial strain was performed. The calculated dielectric functions show that tensile c-axial strain effectively improves the linear optical efficiency, especially for the band-edge transitions, and significantly increase the mobility of electrons in the conduction band. Second-order nonlinear optical susceptibilities show that the tensile c-axial strain will enhance the zero- and low-frequency nonlinear responses of GaN. The enhancement of the nonlinear optical property is explained by the reduction of the polarization of wurtzite GaN under tensile c-axial strains. Based on these findings, we propose a method for improving the electrical and optical properties of the crystal through imposing appropriate stress on the high symmetry crystalline directions. | en_US |
| dc.format.extent | 610704 bytes | - |
| dc.format.mimetype | application/pdf | - |
| dc.language.iso | en_US | - |
| dc.relation (關聯) | Journal of physics. D, Applied physics, 42,185107 | en_US |
| dc.source.uri (資料來源) | http://dx.doi.org/10.1088/0022-3727/42/18/185107 | - |
| dc.title (題名) | Tuning linear and nonlinear optical properties of wurtzite GaN by c-axial stress | en_US |
| dc.type (資料類型) | article | en |
| dc.identifier.doi (DOI) | 10.1088/0022-3727/42/18/185107 | en_US |
| dc.doi.uri (DOI) | http://dx.doi.org/10.1088/0022-3727/42/18/185107 | en_US |
