HYBRID INTERFACE EXCITONS IN ORGANIC-INORGANIC QUANTUM-WELLS

被引：74

作者：

AGRANOVICH, V ^{[1
]}

ATANASOV, R ^{[1
]}

BASSANI, F ^{[1
]}

机构：

[1] SCUOLA NORMALE SUPER PISA,I-56126 PISA,ITALY

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 92卷 / 04期

关键词：

D O I：

10.1016/0038-1098(94)90705-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the exciton states at the interface of organic and inorganic quantum wells (QW) when the energy of the 2D Frenkel exciton in the organic QW is near that of the 2D Wannier exciton in the inorganic semiconductor QW. The dipole-dipole resonance interaction is responsible for the appearance of new states: mixed Frenkel-Wannier excitons with unusual properties such as large oscillator strengths, typical of Frenkel excitons and can also have large exciton radii, typical for Wannier-Mott excitons. The dispersion curves display a minimum away from the center of the Brillouin zone, which is expected to influence the optical properties. The characteristics of organic and inorganic crystals required to obtain appropriate materials for studying hybrid states are discussed. Some illustrative calculations are performed for an organic layer deposited on a ZnCdSe quantum wells.

引用

页码：295 / 301

页数：7

共 27 条

[1] EXCITONS IN ORGANIC MULTIPLE QUANTUM-WELL STRUCTURES [J].