ROLES OF BAND STATES AND 2-PHOTON TRANSITIONS IN THE ELECTROABSORPTION OF A POLYDIACETYLENE

被引：41

作者：

KAWABE, Y

JARKA, F

PEYGAMBARIAN, N

GUO, D

MAZUMDAR, S

DIXIT, SN

KAJZAR, F

机构：

[1] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

[2] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

[3] IDEMITSU KOSAN CO LTD,CENT RES LABS,1280 KAMIIZUMI,SODEGAURA,CHIBA 29902,JAPAN

[4] CENS,CEA,INST RECH TECHNOL & DEV IND,PHYS ELECTR MAT LAB,F-91191 GIF SUR YVETTE,FRANCE

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.44.6530

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report results of experimental and theoretical investigations of electroabsorption (EA) in a poly[1,6-di(N-carbazolyl)-2,4-hexadiyne] DCH polydiacetylene. In addition to the Stark shift of the exciton, a high-energy feature is seen in EA, whose origin has been the subject of controversy. Based on exact theoretical calculation of the EA within an extended Peierls-Hubbard model, we ascribe the high-energy signal to transitions to a continuum threshold. We briefly discuss the contributions of these band threshold states to the third-order optical nonlinearity, chi(3).

引用

页码：6530 / 6533

页数：4

共 17 条

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