Electro-absorption of an ensemble of close-packed CdSe quantum dots

Details Electro-absorption of an ensemble of close-packed CdSe quantum dots Electro-absorption of an ensemble of close-packed CdSe quantum dots

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4748..455g&link_type=abstract

Proc. SPIE Vol. 4748, p. 455-458, ICONO 2001: Fundamental Aspects of Laser-Matter Interaction and Physics of Nanostructures, Ana

Physics

Scientific paper

Highly monodisperse CdSe quantum dots 1.8 nm in size were synthesized capped with surface monolayer of 1-thioglycerol. The optical absorption of thin films of matrix free close- packed and isolated in PMMA matrix quantum dots was studied at various electric field biases. The broadening and red shift of optical transitions in close-packed ensemble against isolated is attributed to the formation of collective electronic submini-bands between interacting nanocrystals. The reversible collapse of collective electronic subminibands has been achieved by applying of strong electric field to the thin film of close-packed quantum dots.

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