Author/Authors :
Y.، Li نويسنده , , D.، Ramadurai, نويسنده , , B.، Kohanpour, نويسنده , , D.، Alexson, نويسنده , , P.، Shi, نويسنده , , A.، Sethuraman, نويسنده , , V.، Saini, نويسنده , , M.، Dutta, نويسنده , , M.A.، Stroscio, نويسنده ,
Abstract :
The absorption spectra of colloidal cadmium sulfide quantum dots in electrolytic solutions are found to manifest a shift in the absorption threshold as the concentration of the electrolyte is varied. These results are consistent with a shift in the absorption threshold that would be caused by electrolytic screening of the field caused by the intrinsic spontaneous polarisation of these wurtzite structured quantum dots. These electrolyte-dependent absorption properties provide a potential means of gaining insights on the variable extracellural and intracellular electrolytic concentrations that are present in biological systems.
