The optical and optoelectronic properties of poly [2-methoxy, 5-(2-ethylhexoxy)-1, 4-phenylenevinylene] (MEH-PPV) hybrid thin films containing various amounts of SiO₂/TiO₂ nanocomposites (STNCs) have been investigated. The solution-blending method was used to prepare all the nanocomposite materials. We found significant quenching of the MEH-PPV emission intensity with increasing STNC content, which results from increasingly efficient charge transfer. The shorter emission lifetimes and decay lifetimes of MEH-PPV/STNCs, in comparison with a pristine MEH-PPV thin film, provide further evidence of efficient charge transfer and also of the absence of static quenching. The purely dynamic quenching in the hybrid thin films is also demonstrated by the absence of any change in the absorption spectrum with increasing STNC content and by the linear Stern–Volmer plot. The efficient charge transfer obtained by increasing the STNC content plays a crucial role in increasing the current and reducing the turn-on voltage of devices, resulting in enhanced OLED performance.

包含各种SiO ₂ / TiO ₂含量的聚[2-甲氧基，5-（2-乙基己氧基）-1、4-亚苯基亚乙烯基]（MEH-PPV）杂化薄膜的光学和光电特性纳米复合材料（STNCs）已被研究。溶液共混法用于制备所有纳米复合材料。我们发现随着STNC含量的增加，MEH-PPV发射强度发生了明显的淬灭，这是由于电荷转移效率提高所致。与原始的MEH-PPV薄膜相比，MEH-PPV / STNC的较短的发射寿命和衰变寿命提供了有效电荷转移以及不存在静态猝灭的进一步证据。杂化薄膜中的纯动态猝灭也通过不存在随STNC含量增加的吸收光谱变化和线性Stern-Volmer图得到证明。通过增加STNC含量获得的有效电荷转移在增加电流和降低器件的导通电压方面起着至关重要的作用，