Photosensitive ring oscillator preparation method and artificial retina thereof
OwnerGuangyu Zhang, Na Li +2inventors
InventorsGuangyu Zhang, Na Li, Congli He, Dongxia Shi
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Abstract
The present invention relates to a photosensitive ring oscillator, its preparation method, and a flexible artificial retina. Specifically, the photosensitive ring oscillators (PROs) based on 2D semiconducting materials have been fabricated on flexible biological compatible substrates, which transduces light information into electrical pulse signals directly, propagating through the optic nerve. The output oscillating frequency varies quasi-linearly with the change of light intensity. The flexible electronic devices can be used as implantable biomimetic retina for artificial vision to recover the sight sense for sight-handicapped people.
Claims12
A photosensitive ring oscillator for use in flexible artificial retina, characterized in that, the photosensitive ring oscillator comprises at least one phototransistor, wherein said at least one phototransistor is fabricated by odd-numbered inverters connected in series with one additional inverter as the output buffer;
- and wherein said at least one phototransistor comprises the following elements set in sequence from top to bottom:
- a flexible substrate;
- a gate electrode;
- a dielectric layer;
- a channel layer;
- and
- a contact electrode;
- and wherein, the material of channel layer is two-dimensional semiconductor and/or photosensitive organic semiconductor.
Dependencies are inferred from the claim text.