Cadmium telluride nanocrystals

Ito, S., Toitani, N., Pan, L., Tamai, N. and Miyasaka, H. (2007) Fluorescence correlation spectroscopic study on water-soluble cadmium telluride nanocrystals fast blinking dynamics in the ps-ms region. J. Phys. Condens. Matter, 19, 486208. 

Many other systems based on different nanoparticles have been introduced, such as copper indium disulfide (CuInS2) [263-265], copper indium diselenide (CuInSe2) [266,267], cadmium telluride (CdTe) [268], lead sulfide (PbS) [269,270], lead selenide (PdSe) [271], and mercury telluride (HgTe) [272]. Some of these systems show enhanced spectral response well into the infrared part of the solar spectrum [271,272]. In most cases the absorption of the nanocrystals was, however, quantitatively small as compared to the conjugated polymers. 

The CdTe nanocrystals were synthesized by using aqueous solution of cadmium perchlorate and electrochemically produced hydrogen telluride with mercaptopropionic acid (MPA) as a stabilizer. The pH of the synthesis solution was maintained at 12, the precursors molar ratio was Cd Te MPA 2 1 2.6. The size of NCs depends on the refluxing time of the reaction mixture and may be tuned from ca. 2 up to ca. 6 nm. 

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