摘要
高分子的电致发光是载流子在电场中的输运和复合 ,为了阐明它的机理 ,需要研究高分子中激子的极化性质 ,首先求得了激子和双激子的解析解 ,然后用线性响应的Green函数方法计算了两者的极化率 ,解析地证明了一个重要的结论 :激子的极化率为正 ,双激子的极化率为负 .从激子跃迁至双激子 ,高分子的电偶极矩要反转方向 .
Since the electroluminescence in polymer comes from the transportation and combination of carriers in the electric field,it is essential to study the polarization property of the excitation in polymer.First we obtain the analytic solutions of exciton and biexciton,then their polarizabilities are calculated using the Green function method.An important result is that we analytically proved that the polarizability of the exciton is positive and that of the biexciton is negative.It follows that the polarization will be reversed when the exciton becomes biexciton.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第9期1778-1785,共8页
Acta Physica Sinica
基金
国家自然科学基金!(批准号 :5 9790 0 5 0
198740 14 )
国家高技术发展计划!(批准号 :863 715 0 10 )
高等学校博士点基金资助&&
