Department of Physics and Electronic Information,Vibin University,Yibin 644000,China;
Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;
Department of Physics and Electronic Information,Vibin University,Yibin 644000,China;
Department of Physics and Electronic Information,Vibin University,Yibin 644000,China;
Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;
absorption spectra; threshold absorption; polarizability; HOMO-LUMO gaps;