期刊
JOURNAL OF POLYMER RESEARCH
卷 20, 期 2, 页码 -出版社
SPRINGER
DOI: 10.1007/s10965-013-0076-x
关键词
CdSe QDs; PMMA; Composite; Optical and thermal properties; Photoacoustic technique; dc electrical conductivity
资金
- Taif University [1/432/432]
The concentration dependence of optical, thermophysical and electrical behavior, based on poly-methyl methacrylate filled with CdSe quantum dots (PMMA (CdSe)) have been investigated. The PMMA(CdSe) concentration was 0.001, 0.005, 0.01 and 0.05 wt.%. The composites were prepared in the form of films by the solution casting technique. The optical properties of PMMA(CdSe) films have showed that, there is a red shift of the absorption and photoluminescence (PL) after the QDs were added into PMMA. The PL peak intensity of the composite was enhanced by approximate to 2.5 times compared to the CdSe QDs. The thermal conductivity (k) was obtained by measuring the thermal diffusivity (alpha) and thermal effusivity (e) using the photoacoustic (PA) technique. The composites exhibit approximate to 120 % improvement in k at 0.05 wt.%. Furthermore, the dc electrical conductivity measurements of pure and doped PMMA, showed that the obtained values were enhanced about four orders of magnitude for the highest concentration compared with pure PMMA at 500 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据