Why does Selenium nano particles exhibit SPR absorption which is not a metal?

Sireesh babu Maddineni @Sireesh-Babu-Maddineni

18 June 2020 1 8K Report

Why does Selenium nano particles exhibit SPR absorption which is not a metal? looking for for explanation and literature

Raul Rangel-Rojo

One possibility, which I have heard in other cases is that, while Se is not a metal, light excitation can generate a free electron population high enough to give a negative dielectric constant, end hence the appearance of a SPR.

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