Solvothermal synthesis and study of nonlinear optical properties of nanocrystalline thallium doped bismuth telluride

详细信息    查看全文

• 作者：Muralikrishna Molli ; ^{muralikrishnamolli@sssihl.edu.in} ; Sowmendran Parola ; L.A. Avinash Chunduri ; Saikiran Aditha ; V Sai Muthukumar ; Tanu Mimani Rattan ; Venkataramaniah Kamisetti
• 关键词：Bismuth telluride ; Thallium doped bismuth telluride ; Z-scan ; Two-photon absorption ; Optical limiting
• 刊名：Journal of Solid State Chemistry
• 出版年：2012
• 出版时间：May, 2012
• 年：2012
• 卷：189
• 期：Complete
• 页码：85-89
• 全文大小：685 K

文摘

Nanocrystalline Bismuth telluride and thallium (4 mol % ) doped Bismuth telluride were synthesized through hydrothermal method. The as-prepared products were characterized using Powder X-ray Diffraction, High Resolution Transmission Electron Microscopy, Energy Dispersive X-Ray Spectroscopy, UV-Visible spectroscopy and Fourier Transform Infrared Spectroscopy. Powder XRD results revealed the crystalline nature of the obtained phases. HRTEM showed the particle-like morphology of the products. The decrease in the absorption coefficient due to thallium doping was observed in FTIR spectra. The intensity dependent nonlinear optical properties of nanocrystalline bismuth telluride and thallium doped bismuth telluride were studied using the Z-scan technique in open-aperture configuration. Bismuth telluride doped with thallium showed enhanced nonlinear optical response compared to pristine bismuth telluride and hence could be used as a potential candidate for optical power limiting applications.