Designed to outperform conventional computers when performing machine-learning tasks, neuromorphic computation is the principle whereby certain aspects of the human brain are replicated in hardware. While great progress has been made in this field in recent years, almost all input signals provided to neuromorphic processors are still designed for traditional (von Neumann) computer architectures. Here, we show that a simple photosensitive capacitor will inherently reproduce certain aspects of biological retinas. We found that capacitors based on metal halide perovskites will output a brief voltage spike in response to changes in incident light intensity, but output zero voltage under constant illumination. Such a sensor is not only optimized for use with spiking neuromorphic processors but also anticipated to have broad appeal from fields such as light detection and ranging, autonomous vehicles, facile recognition, navigation, and robotics.
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A perovskite retinomorphic sensor
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7 December 2020
Research Article|
December 08 2020
A perovskite retinomorphic sensor

Cinthya Trujillo Herrera;
Cinthya Trujillo Herrera
School of Electrical Engineering and Computer Science, Oregon State University
, Corvallis, Oregon 97331, USA
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John G. Labram
John G. Labram
a)
School of Electrical Engineering and Computer Science, Oregon State University
, Corvallis, Oregon 97331, USA
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
School of Electrical Engineering and Computer Science, Oregon State University
, Corvallis, Oregon 97331, USA
a)Author to whom correspondence should be addressed: [email protected]
Appl. Phys. Lett. 117, 233501 (2020)
Article history
Received:
September 18 2020
Accepted:
November 07 2020
Connected Content
A companion article has been published:
Perovskite capacitors offer change-sensitive retinomorpic sensors
Citation
Cinthya Trujillo Herrera, John G. Labram; A perovskite retinomorphic sensor. Appl. Phys. Lett. 7 December 2020; 117 (23): 233501. https://doi.org/10.1063/5.0030097
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