Metal chalcogenide composite nano-particles and layers...

Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides

Reexamination Certificate

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C252S30140S, C252S30160R, C252S30160S, C252S06230Q, C423S508000, C423S509000, C423S561100, C423S562000, C423S566100, C977S826000, C977S824000, C977S783000, C977S778000, C977S834000, C977S948000, C136S264000, C136S265000, C136S260000, C136S243000, C438S095000

Reexamination Certificate

active

07468146

ABSTRACT:
A metal chalcogenide composite nano-particle comprising a metal capable of forming p-type semiconducting chalcogenide nano-particles and a metal capable of forming n-type semiconducting chalcogenide nano-particles, wherein at least one of the metal chalcogenides has a band-gap between 1.0 and 2.9 eV and the concentration of the metal capable of forming p-type semiconducting chalcogenide nano-particles is at least 5 atomic percent of the metal and is less than 50 atomic percent of the metal; a dispersion thereof; a layer comprising the nano-particles; and a photovoltaic device comprising the layer.

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