Detection of shallow electron traps in quantum-sized CdS particles using dithiolenes |
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| Authors: | J A Jacob N Biswas T Mukherjee S Kapoor |
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| Institution: | (1) Radiation & Photochemistry Division, Bhabha Atomic Research Centre, 400 085 Mumbai, India |
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| Abstract: | Photophysical characteristics of capped and uncapped CdS particles have been investigated in aqueous solution. It is seen
that the fluorescence spectrum shifts towards lower energies in the presence of toluene dithiol (TDT) and dimercaptophthalic
acid (DMPA). This shift, which is due to quenching of shallow traps, is more predominant with TDT. Also, the presence of excess
Cd2+ ions at the surface of the CdS particles facilitates the binding of dithiolenes. |
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| Keywords: | CdS particles fluorescence dithiolenes |
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