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Flexible Floating-Gate Optoelectronic Synaptic Transistor for Neuromorphic Visual Processing
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DOI：10.1109/led.2026.3691767.png)
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Abstract
En 中文
Neuromorphic visual systems inspired by biological vision have demonstrated great potential in visual perception and information processing. With the rapid development of wearable electronics, there is an increasing demand for flexible neuromorphic visual systems. However, most reported devices are fabricated on rigid substrates, which fail to mimic the elastic structure of the human retina and limit their applicability in flexible scenarios. Here, we present a flexible floating-gate phototransistor (FGPT) based on CsPbBr3 quantum dots and an organic semiconductor. Benefiting from the high photosensitivity of the organic semiconductor and the electrical properties of zero-dimensional quantum dots, the device exhibits a large memory window of 20 V and multilevel storage capability. In addition, under combined electrical and optical modulation, the device demonstrates nonlinear memory decay and learning-experience behavior. Notably, even under a small bending radius (R = 5 mm), the device maintains continuously tunable conductance modulation. Furthermore, the flexible FGPT enables image preprocessing, achieving a low mean squared error (MSE) of ${5}.{51}\times {10} ^{-3}$ for the combined edge detection result. This work provides an effective strategy for visual information preprocessing in next-generation flexible neuromorphic systems.
Keywords:
Floating-gate transistor
optoelectronic synapse
synaptic plasticity
edge detection
flexibility
Journal
IF:
4.5
Papers:
657
Citations:
2.3W