Transient uv electroluminescence from poly(p-phenylenevinylene) conjugated polymer induced by strong voltage pulses

被引：36

作者：

Chayet, H ^{[1
]}

Pogreb, R ^{[1
]}

Davidov, D ^{[1
]}

机构：

[1] COLL JUDEA & SAMARIA, RES INST, ARIEL, ISRAEL

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.56.R12702

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present time-resolved and spectral measurements of electroluminescence from poly(p-phenylenevinylene) (PPV) thin films upon application of high-voltage pulses. Above some threshold voltage of 100 V, we observe an uv-violet emission centered at 390 nm, in addition to the characteristic yellow-green luminescence of PPV. We explain this emission as being induced by a generation of hot carriers in the strong electric field, which inhibits the formation of singlet excitons and enhances the probability for direct interband transitions of the relaxed carriers.

引用

页码：12702 / 12705

页数：4

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