26 April 2018 Investigation of spectral characteristics of tunnel photodiodes based on DLC nanofilms
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Abstract
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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Garif G. Akchurin, Nickolay P. Aban’shin, Yuri A. Avetisyan, Georgy G. Akchurin, Vyacheslav I. Kochubey, Alexander N. Yakunin, "Investigation of spectral characteristics of tunnel photodiodes based on DLC nanofilms", Proc. SPIE 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX, 107161I (26 April 2018); doi: 10.1117/12.2315152; https://doi.org/10.1117/12.2315152
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