High conductivity characteristics of phosphorus-doped nanocrystalline silicon thin films by KrF pulsed excimer laser irradiation method.

The microstructure and high conductivity properties of phosphorus-doped nanocrystalline silicon films were investigated on samples prepared by a plasma-enhanced chemical vapor deposition technique and the KrF pulsed excimer laser irradiation method. The results of Fourier transform infrared spectroscopy and Raman spectroscopy show that Si nanocrystallites with an average diameter of 2 nm to 3 nm are formed in the film. The degree of crystallinity increases with the increase of laser radiation intensity, while the content of hydrogen decreases gradually.

The effect of ion radius on luminescence for alkali ions doping in YO: Yb/Ho thin film.

In this paper, alkali ion (Li Na K and Rb)-doped YO:Yb/Ho up conversion films were prepared using the sol-gel method. The structures of the films were studied by using X-ray diffraction, scanning electron microscopy, and Raman spectroscopy. A series of high-quality thin films with good crystallization were prepared.

Tunable Emission and Color Temperature of Yb/Er/Tm-Tridoped YO-ZnO Ceramic Nano-Phosphors Using Er Concentration and Excitation Pump Power.

In this study, a series of well-crystallized Yb/Er/Tm-tridoped YO-ZnO ceramic nano-phosphors were prepared using sol-gel synthesis, and the phosphor structures were studied using X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis. The phosphors were well crystallized and exhibited a sharp-edged angular crystal structure and mesoporous structure consisting of 270 nm nano-particles. All phosphors generated blue, green, and red emission bands attributed to Tm: G→H, Er: H (S)→I, and Er: F→I radiative transitions, respectively.