Temperature effects on the spectral properties of colloidal CdSe nanodots, nanorods, and tetrapods | Zendy

A. Al Salman | Zendy; A. Tortschanoff | Zendy; Mohamed Taha | Zendy; Dino Tonti | Zendy; Frank van Mourik | Zendy; Majed Chergui | Zendy

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Temperature effects on the spectral properties of colloidal CdSe nanodots, nanorods, and tetrapods

Author(s) -

A. Al Salman,

A. Tortschanoff,

Mohamed Taha,

Dino Tonti,

Frank van Mourik,

Majed Chergui

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2696687

Subject(s) - nanodot , nanorod , exciton , quantum dot , materials science , fluorescence , nanocrystal , rod , colloid , absorption (acoustics) , molecular physics , core (optical fiber) , spectral line , absorption spectroscopy , condensed matter physics , photoluminescence , nanotechnology , chemical physics , optoelectronics , optics , chemistry , physics , medicine , pathology , composite material , alternative medicine , astronomy

The temp. dependence of the absorption and fluorescence spectra of colloidal CdSe nanocrystals was compared for three different shapes (dots, rods, and tetrapods) at 4-300 K. While the shift of the fluorescence max. indicates little dependence on the shape, the broadening of the emission spectrum behaves very differently for dots and rods, indicating major differences in the broadening mechanisms for different shapes. Tetrapods behave more similarly to dots, which suggests that the lowest exciton state is centered at the core. [on SciFinder (R)

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