Conduction mechanisms in undoped polycrystalline diamond films

Chou, Hsueh-Tao; Lee, Chia-Chang; Sun, Chia-Hsin

doi:10.1117/12.392107

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2023

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“…FP conduction was observed in the non-linear region at high voltages for many diamond samples regardless of deposition processes [ 44 , 45 ]. Amplification of the FP effect was obtained through X-ray irradiation in [ 43 ], where it was found for the exponential coefficient that a parabolic dependence on the density of occupied traps such to reach more than quadruple values in a specific electric field range (2 kV/cm → 7 kV/cm).…”

Section: Discussionmentioning

confidence: 99%

Frenkel-Poole Mechanism Unveils Black Diamond as Quasi-Epsilon-Near-Zero Surface

et al. 2023

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A recent innovation in diamond technology has been the development of the “black diamond” (BD), a material with very high optical absorption generated by processing the diamond surface with a femtosecond laser. In this work, we investigate the optical behavior of the BD samples to prove a near to zero dielectric permittivity in the high electric field condition, where the Frenkel-Poole (FP) effect takes place. Zero-epsilon materials (ENZ), which represent a singularity in optical materials, are expected to lead to remarkable developments in the fields of integrated photonic devices and optical interconnections. Such a result opens the route to the development of BD-based, novel, functional photonic devices.

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Section: Discussionmentioning

confidence: 99%