ELECTROABSORPTION DUE TO EXCITONS IN CRYSTALLINE MOLECULAR THIN-FILMS GROWN BY ORGANIC MOLECULAR-BEAM DEPOSITION

被引：38

作者：

SHEN, Z ^{[1
]}

BURROWS, PE ^{[1
]}

FORREST, SR ^{[1
]}

ZIARI, M ^{[1
]}

STEIER, WH ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT ELECT ENGN,LOS ANGELES,CA 90089

来源：

CHEMICAL PHYSICS LETTERS | 1995年 / 236卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(95)00195-A

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We measure the electroabsorption due to the lowest absorption peak in ordered organic molecular crystalline films of 3,4,9,10-perylenetetracarboxylic dianhydride grown by organic molecular beam deposition. The application of electric fields induces both a Stark shift and a broadening of the exciton absorption line. We find a nearly spherical exciton of radius 14 +/- 2 angstrom, an effective hole mass of (0.13 +/- 0.02)m0, where m0 is the free electron mass, and a binding energy of - 150 +/- 15 meV, suggesting that excitons in organic crystals with very small intermolecular stacking distances can be described by a combined Wannier and charge-transfer model.

引用

页码：129 / 134

页数：6

共 11 条

[1] CHARGE-TRANSFER EXCITONS IN ANTHRACENE-CRYSTALS AND THEIR ROLE IN OPTICAL CHARGE CARRIER GENERATION [J].