Spectral characteristics of tunnel photodiodes based on DLC nanofilms

What is it about?

Spectral characteristics of tunnel photodiodes based on DLC nanofilms are investigated. The tunneling photo effect has been studied in a microdiode with an electrostatic field localized at an emitter based on a nanosized DLC structure. It is established the photocurrent, when the carbon nanoemitter is exposed by laser and tunable low-coherent radiation in the spectral range from UV to near IR with photons of low energy (below work function). A linear dependence of the photocurrent on the level of optical power in the range of micro- and milliwatt power is established. The effect of saturation of the current-voltage characteristics of the tunnel photocurrent associated with a finite concentration of non-equilibrium photoelectrons is observed. The observed spectral Watt-Amper characteristics can be adequately interpreted using a modified Fowler–Nordheim equation for non-equilibrium photoelectrons.

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Why is it important?

The design and spectral characteristics of the vacuum photosensor are described. Ballistic transport of electrons in vacuum provides high speed.

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