کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5348086 | 1503574 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Probing the structure of CuInS2-ZnS core-shell and similar nanocrystals by Raman spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
CuInS2/ZnS core-shell and alloyed nanocrystals (NCs) are promising candidates for applications in biolabeling, photocatalysis, solar energy conversion, and light emitting diodes. The growth mechanism and subsequent internal structure of such heterogeneous NCs are therefore of crucial importance, as it strongly affects their optical and electronic properties. Here, we investigated using resonant Raman spectroscopy the structure of CuInS2/ZnS and Cu-Zn-In-S/ZnS core-shell NCs, as well as the evolution of Cu2âxS NCs into CuInS2via the heterogeneous Cu2âxS/CuInS2 phase. We demonstrate that the particular phases can be distinguished based on their characteristic Raman modes and tuning the exciting laser energy into resonance with the bandgap of the particular phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 395, 15 February 2017, Pages 24-28
Journal: Applied Surface Science - Volume 395, 15 February 2017, Pages 24-28
نویسندگان
Volodymyr Dzhagan, Björn Kempken, Mykhailo Valakh, Jürgen Parisi, Joanna Kolny-Olesiak, Dietrich R.T. Zahn,