发光学报2008，Vol.29Issue(1)：1-4,4.
抛物量子点中弱耦合激子的光学声子平均数
Mean Number of Optical Phonons of Weak-coupling Exciton in Parabolic Quantum Dot
摘要
Abstract
On the condition of electron-LO phonons weak coupling, the properties of exciton in parabolic quantum dot are studied. By using the linear combination operator and unitary transformation method, the ground state energy and the mean number of optical phonons in a parabolic quantum dot are calculated for the weak coupling exciton case. Numerical calculations are performed for GaAs semiconductor as a example and the results show that the mean number of optical phonons of weak-coupling exciton decrease with the increasing of the ground state energy and the confine-ment strength of quantum dot and increase with the increasing of the quantum dot radius. The ground state energy de-crease with the increasing mean number of optical phonons and the coupling strength.关键词
量子点/激子/光学声子平均数/弱耦合Key words
quantum dot/ exciton/ mean number of optical phonons/ weak-coupling分类
数理科学引用本文复制引用
李志新,王鸿雁,辛伟,肖景林..抛物量子点中弱耦合激子的光学声子平均数[J].发光学报,2008,29(1):1-4,4.基金项目
河北科技师范学院博士基金资助项目(2006D001,10747002)Doctor of Hebei Normal University of Science and Technology (200613001,10747002) （2006D001,10747002）
