کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
848134 909237 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the optical properties of lead chalcogenide nanoparticles
ترجمه فارسی عنوان
در خصوص خواص نوری نانو ذرات کلکوهناید سرب
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی

Lead chalcogenide (PbS, PbSe) nanoparticles are prepared for two equimolar concentrations (0.25 and 0.5) by simple and low cost sol–gel method at room temperature. The obtained Pb(S,Se) nanoparticles were characterized by XRD, FTIR, SEM and Optical analysis. The XRD pattern confirm the Pb(S,Se) nanoparticles have face-centered cubic structure and crystallinity found to be increased as increase (0.5 mol L−1) the concentration. Average crystallite size is found be around 62–69 nm and 66–70 nm for PbS and PbSe, respectively. The FTIR spectra confirms the presence of stretching and bending vibrations of PbS at 615, 976, 1096 and 1366 cm−1 and SeOSe vibrations at 656, 736 and 852 cm−1. In the SEM images, coalescence between grains, homogeneous agglomeration form with spherical particles has shown which is found to be less than 0.5 μm. The band gap energy of PbS is found to be 1.6 eV and 2.1 eV for PbSe.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 126, Issue 19, October 2015, Pages 2133–2137
نویسندگان
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