NMR study of InP quantum dots: Surface structure and size effects
نویسندگان
چکیده
We report the results of P NMR measurements on trioctylphosphine oxide ~TOPO! passivated InP quantum dots. The spectra show distinct surface-capping sites, implying a manifold of crystal– ligand bonding configurations. Two In P surface components are resolved and related to different electronic surroundings. With decreasing particle size the In P core resonance reveals an increasing upfield chemical shift related to the overall size dependence of the InP electronic structure. © 1999 American Institute of Physics. @S0021-9606~99!70718-X#
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