کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5403063 1392750 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonresonant two-photon generation of excitonic matter in a CuCl pellet
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Nonresonant two-photon generation of excitonic matter in a CuCl pellet
چکیده انگلیسی

A pressed CuCl pellet is optically excited at 2 K using an excitation energy in the range from 1892 to 2843 meV, which is far below the bandgap. The steady-state population dynamics unambiguously indicates an unusual two-photon generation of ground-state excitons. At high-excitation levels, the observed spectra exhibit rich spectral features arising from electron-hole plasma and electron-hole droplets formation. This nonresonant two-photon excitation is presumably assisted by impurity bands due to grain boundaries and surfaces in this random semiconductor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 10, October 2008, Pages 1738-1744
نویسندگان
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