کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
76641 | 49145 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of template defects in radiative energy relaxation of CdTe nanocrystals in nanotubes of chrysotile asbestos Effect of template defects in radiative energy relaxation of CdTe nanocrystals in nanotubes of chrysotile asbestos](/preview/png/76641.png)
Regular arrays of parallel nanotubes of chrysotile asbestos have been infilled with CdTe nanocrystals using capillary forces. The radiative recombination of photoexcited electron–hole pairs has been studied using photoluminescence and photoluminescence excitation techniques. The co-existence of two channels of radiative relaxation of photoexcitations generated in the nanocomposite, namely, the recombination in nanocrystals and the recombination in template defects, has been observed. The enhancement of the defect emission in infilled asbestos has been interpreted as a result of trapping the electron–hole pairs from nanocrystals. Selective inhibition of emission from nanocrystals has been observed in nanotubes co-infiltrated with semiconductor and gold nanoparticles.
Journal: Microporous and Mesoporous Materials - Volume 107, Issues 1–2, 1 January 2008, Pages 212–218