ELECTRON CORRELATION IN THE EXCITED-STATE OF CONJUGATED POLYMERS

被引:0
|
作者
WU, CQ [1 ]
SUN, X [1 ]
机构
[1] FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA
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T [工业技术];
学科分类号
08 ;
摘要
Correlation effects in the excited state of conjugated polymers are investigated. In the presence of an additional electron or hole, the correlation induces a polarization cloud around the additional particle, which forms a polaron. For the excitation energy of a polaron, there is a competition between a loss of the correlation energy and a gain of the polarization energy. The calculation on correlation effects of the band gap has been done for both the Hubbard model and long-range interactions.
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页码:675 / 676
页数:2
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