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In this study, a retinomorphic artificial synapse device based on a tungsten diselenide (WSe2)\/indium arsenide quantum dot (InAs QD) heterostructure is developed. This device exhibits enhanced short\u2010wavelength infrared (SWIR) responsivity at 1060\u00a0nm, which is a synaptic behavior analogous to the human retina. The WSe2\/InAs QD improves charge transport and photon absorption through the quantum confinement effects of InAs QDs, facilitating efficient SWIR detection. The heterojunction enables effective electron\u2013hole pair separation, enhancing the photodetector performance. The device adapts to SWIR signal pulses like the human eye to light flicker. The WSe\u2082\/InAs QD device demonstrates significantly higher responsivity and a superior ability to emulate a wide range of synaptic properties compared to previously reported Si\u2010based and 2D material\/QD\u2010based devices. An artificial neural network trained on the Fashion MNIST dataset achieved over 85% accuracy, which is higher than previous reports. This showcases the potential of retina\u2010inspired SWIR optoelectronic devices for compact, efficient machine vision and in\u2010sensor computing. This study underscores the potential of integrating QDs with 2D materials to create advanced photodetectors that mimic biological sensory functions.<\/jats:p>","DOI":"10.1002\/smll.202410892","type":"journal-article","created":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T16:54:10Z","timestamp":1741712050000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Infrared\u2010Triggered Retinomorphic Artificial Synapse Electronic Device Containing Multi\u2010Dimensional van der Waals Heterojunctions"],"prefix":"10.1002","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-6572-8416","authenticated-orcid":false,"given":"Soobin","family":"Shim","sequence":"first","affiliation":[{"name":"Department of Materials Engineering and Convergence Technology Gyeongsang National University  Jinju Gyeongsangnam\u2010do 52828 Republic of 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