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Environmentally friendly and degradable organic neuromorphic vision sensors
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DOI：10.1016/j.matt.2024.02.003.png)
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Abstract
En 中文
Transient electronic devices can help eliminate the growing environmental problem of electronic pollution.However, their applications are severely limited by poor optoelectronic performance. Here, a new degradable polymeric dielectric material is synthesized by a one-step method for organic neuromorphic vision sensors (ONeuVSs). A high mobility of 2.74 cm 2 V - 1 s - 1 and current on/off ratio greater than 10 9 were obtained. Moreover, we achieved excellent optical figures of merit with a maximum photosensitivity of 8.7 3 10 8 and maximum detectivity of 9.42 3 10 16 Jones, which are the best values among transient electronic devices. The ONeuVS array could perform static image recognition with an accuracy of 92.7% and high-pass filtering behavior. More interestingly, both high-performance optical synapses and switching functional devices could be realized by modulating the organic semiconductors with or without alkyl chains. This study provides insights for developing a low-cost and environmentally friendly approach for constructing degradable ONeuVSs with sensing, memory, and processing in one device.
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