电致发光
材料科学
光电子学
瞬态(计算机编程)
二极管
消灭
电压
发光二极管
载流子
物理
纳米技术
图层(电子)
计算机科学
操作系统
量子力学
作者
Siegfried Karg,Vladimir Dyakonov,Markus Meier,W. Rieβ,G. Paasch
标识
DOI:10.1016/0379-6779(94)90033-7
摘要
Transient behaviour of poly(p-phenylenevinylene) (PPV) thin film devices was investigated via short voltage pulses. Between the application of a rectangular voltage pulse and the first appearance of electroluminescence (EL) a time lag exists, which depends on the pulse height. Response times in the order of 10−3 to 10−6 s in a small voltage range from 2 to 10 V, respectively, were measured. Thus, the estimated mobility of positive charge carriers shows a strong field dependence ranging from 10−7 to 3 × 10−6 cm2 V−1 s−1, which can be described by a Poole-Frenkel-detrapping model. We observed a delayed EL with a lifetime of 80 μs, pointing to a triplet-triplet-annihilation process.
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