Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, Rome, Italy.
Department of Electrical and Electronic Engineering, Faculty of Engineering and Physical Sciences, Advanced Technology Institute, University of Surrey, Guildford, UK.
Sci Rep. 2020 Dec 8;10(1):21457. doi: 10.1038/s41598-020-77819-z.
In recent years, organic electronic materials have been shown to be a promising tool, even transplanted in vivo, for transducing light stimuli to non-functioning retinas. Here we developed a bio-hybrid optoelectronic device consisting of patterned organic polymer semiconductors interfaced with an electrolyte solution in a closed sandwich architecture in order to study the photo-response of photosensitive semiconducting layers or patterns in an environment imitating biological extracellular fluids. We demonstrate an artificial retina model composed of on an array of 42,100 pixels made of three different conjugated polymers via inkjet printing with 110 pixels/mm packing density. Photo-sensing through three-colour pixelation allows to resolve incoming light spectrally and spatially. The compact colour sensitive optoelectronic device represents an easy-to-handle photosensitive platform for the study of the photo response of artificial retina systems.
近年来，有机电子材料已被证明是一种很有前途的工具，甚至可以在体内移植，将光刺激转化为无功能的视网膜。在这里，我们开发了一种生物混合光电设备，由图案化的有机聚合物半导体组成，与电解质溶液在封闭的三明治结构中接口，以研究在模拟生物细胞外液的环境中光敏半导体层或图案的光响应。我们通过喷墨打印用 110 像素/毫米的封装密度制作了一个由三种不同共轭聚合物组成的、具有 42100 个像素的阵列，展示了一个人工视网膜模型。通过三色像素化进行光感测，可以实现对传入光的光谱和空间分辨率。这种紧凑的彩色感光光电设备代表了一种易于处理的感光平台，可用于研究人工视网膜系统的光响应。
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