Reproducible on-off switching of the light emission from the electroluminescent device containing a spin crossover complex

被引：77

作者：

Matsuda, Masaki ^{[1
]}

Isozaki, Hikaru ^{[1
]}

Tajima, Hiroyuki ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

THIN SOLID FILMS | 2008年 / 517卷 / 04期

关键词：

Organic light emitting device; Electroluminescence; Emission quenching; Spin transition; Spin crossover complex;

D O I：

10.1016/j.tsf.2008.09.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To examine the mechanism of a reproducible on-off switching of light emission from a novel organic electroluminescent (EL) device consisting of a spin crossover complex of [Fe(dPP)(2)](BF(4))(2) (dpp=2,6-di (pyrazol-1-yl)pyridine) and chlorophyll a, we have investigated the EL properties of an ITO/chlorophyll a: [Fe(dPP)(2)](BF(4))(2)/Al device. The comparison with a reference device not containing [Fe(dpp)(2)](BF(4))(2) revealed that the introduction of [Fe(dpp)(2)](BF(4))(2) results in small threshold voltage and large external quantum efficiency. Moreover, the EL spectra in the low-temperature region, where [Fe(dpp)(2)](BF(4))(2) is in the low-spin state, showed the emission from the ITO electrode, suggesting that injected electrons pass through the active layer via [Fe(dPP)(2)](BF(4))(2). (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：1465 / 1467

页数：3

共 10 条

[1]

Cambi L., 1931, ATTI ACCAD NAZ LINCE, V13, P809

[2]

Gutlich P., 2004, SPIN CROSSOVER TRANS

[3] Stereochemical effects on the spin-state transition shown by salts of [FeL2]2+ [L=2,6-di(pyrazol-1-yl)pyridine] [J].