کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8160286 | 1525104 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Growth and properties of solvothermally derived CZTSe nanocrystals using elemental precursors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cu2ZnSnSe4 (CZTSe) nanocrystals were prepared by a solvo-thermal method using elemental copper, zinc, tin and selenium powders as precursors and ethylenediamine as a stabilizer and chelating medium. The particles were synthesized at 180â¯Â°C after which they were annealed at 300â¯Â°C and 400â¯Â°C for 1â¯h. The influence of annealing the nanocrystals, on the crystal structure, particle size, morphology, composition and optical properties has been investigated. As-grown particles were found to contain secondary phases, which subsequently transformed into CZTSe nanocrystals upon annealing. XRD and Raman results confirmed that the samples recrystallized into kesterite CZTSe on annealing at 400â¯Â°C. SEM studies show that the as-grown material has a platelet like morphology, and after annealing at 400â¯Â°C, freshly formed nanosized particles (10-20â¯nm) appear. TEM studies reveal that the grain size of CZTSe nanoparticles is about 5-10â¯nm. Optical studies show that the band gap energy exhibits a blue shift in the range 1.3-1.6â¯eV, indicative of quantum confinement of electrons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 545, 15 September 2018, Pages 262-267
Journal: Physica B: Condensed Matter - Volume 545, 15 September 2018, Pages 262-267
نویسندگان
Tarun Chandel, M Burhanuz Zaman, Nilanjan Basu, Jayeeta Lahiri, Rajaram Poolla,