Open AccessA study on luminescence dynamics of solid-state cathodoluminescence of MEH-PPV
Author(s) -
Qu Chong,
Zheng Xu,
Feng Teng,
Qian Liu,
YU Wen-ge,
Shanyu Quan,
Xurong Xu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.4387
Subject(s) - cathodoluminescence , luminescence , materials science , superposition principle , optoelectronics , voltage , electron , solid state , spectral line , optics , physics , engineering physics , quantum mechanics , astronomy
Based on the layer-optimized method, the devices of sandwiched structure are pr oduced by compounding MEH-PPV and SiO2 In three different voltage regions of alternating current, the devices luminesce differently. When the voltage is low, red emission is obtained; and if the voltage is high, blue emission is acquired. The superposition of the above two emissions is obtained when the voltage is moderate. The red or blue emission belongs to the solidstate cathodoluminesc ence, it originates from the accelerated electrons in SiO2, which bombard the organic layers. By the study on the optic characteristics of the devices, the sc opes and regulations of spectra shift are analyzed.