Abstract

In this study, the influence of electro-thermo-polarization (ETP) on the charge state and luminescence properties of polymer nanocomposites based on PP and nanoparticles of amorphous silicon dioxide nanoparticles were investigated. By comparing the results of the charge state and the intensity of the PL spectra of nanocomposites, it was determined that polarized composites with a 3% mass content of SiO₂ nanoparticles have relatively high luminescence. For the same composites PP + 3% SiO₂, relatively high values of the spatial space charge density, the intensity of the internal local field, and the thickness of the interphase layer are observed. Space charges create a large internal local field that stimulates the already existing oxygen deficiency centers in amorphous silica nanoparticles. This leads to the activation of the luminescence centers, which is the cause of the increase in the PL emission intensity in this nanocomposite after the ETP.

摘要

在这项研究中，研究了电热极化（ETP）对基于PP的聚合物纳米复合材料和非晶态二氧化硅纳米颗粒的纳米颗粒的电荷状态和发光性能的影响。通过比较纳米复合材料的电荷状态和PL光谱的强度，可以确定具有3％质量含量SiO ₂纳米颗粒的偏振复合材料具有相对较高的发光度。对于相同的复合材料，PP + 3％SiO ₂观察到相对较高的空间空间电荷密度，内部局部场的强度和相间层的厚度。空间电荷会产生一个较大的内部局部场，从而激发非晶态二氧化硅纳米粒子中已经存在的缺氧中心。这导致发光中心的活化，这是在ETP之后该纳米复合材料中PL发射强度增加的原因。