کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1682334 | 1010467 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Swift heavy ion induced phase transition in CdTe films deposited by spray pyrolysis in presence of electric field Swift heavy ion induced phase transition in CdTe films deposited by spray pyrolysis in presence of electric field](/preview/png/1682334.png)
CdTe polycrystalline thin films possessing hexagonal phase regions are obtained by spray deposition in presence of a high electric field. Thin film samples are irradiated with 100 MeV Ag ions using Pelletron accelerator to study the swift heavy ion induced effects. The ion irradiation results in the transformation of the metastable hexagonal regions in the films to stable cubic phase due to the dense electronic excitations induced by beam irradiation. The phase transformation is seen from the X-ray diffraction patterns. The band gap of the CdTe film changes marginally due to ion irradiation induced phase transformation. The value changes from 1.47 eV for the as deposited sample to 1.44 eV for the sample irradiated at the fluence 1×10131×1013 ions/cm2. The AFM images show a gradual change in the shape of the particles from rod shape to nearly spherical ones after irradiation.
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 267, Issue 15, 1 August 2009, Pages 2480–2483