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研究了可溶性ＰＰＶ衍生物（ＭＮ－ＰＰＶ和ＭＥＨ－ＰＰＶ）薄膜在双层结构器件（ＩＴＯ／ｐｏｌｙｍｅｒ／Ａｌｑ_３／Ａ１）中的电致发光以及有机层厚度对器件发光性能的影响．对于不同厚度的Ａｌｑ_３电子传输层，器件的发光光谱随着电压的增加出现不同的变化规律．以能带理论和电荷对势垒界面的隧穿为基础，认为这是由于器件上电场的重新分布和电场作用下载流子输运及隧穿势垒作用的综合结果．
The effects of the electroluminescence and the organic layer thickness on the luminescent properties of the device were investigated in a two-layer structure device (ITO / polymer / Alq_3 / A1) by using soluble PPV derivatives (MN-PPV and MEH-PPV) For different thickness of Alq_3 electron transport layer, the emission spectrum of the device shows different variation with the increase of voltage. Based on band theory and charge tunneling on the barrier interface, this is considered to be the result of the recombination of the electric field on the device and the effect of carrier transport and tunneling barrier under the electric field.