The light-sensitive properties of organic electrochemical transistors (OECTs) based on polythiophene and PEDOT:PSS have been studied for the first time. It has been found that the maximum transconductance of a developed OECT shifts to higher gate voltages with the increase of light irradiation at the polythiophene gate electrode. This gate material chosen for the OECT plays an important role in the light-enhanced oxygen reduction reaction (ORR), which is subsequently responsible for the doping/de-doping of the channel material upon light illumination, thus making the OECT an efficient light sensing device. Additionally, the connection of these devices allowed the creation of organic opto-logic gates. This very first low voltage organic optical-to-electronic interface can potentially find applications in modern electronics and photonics. The development process includes geometry optimization and optimization of the channel and gate materials.

中文翻译：

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基于有机电化学晶体管的光传感器和光电门†

首次研究了基于聚噻吩和PEDOT：PSS的有机电化学晶体管（OECT）的光敏特性。已经发现，随着聚噻吩栅电极上光辐射的增加，已形成的OECT的最大跨导转移到较高的栅极电压。选择用于OECT的该栅极材料在光增强氧还原反应（ORR）中起着重要作用，该反应随后负责在光照下对沟道材料进行掺杂/去掺杂，从而使OECT成为有效的光感测设备。此外，这些设备的连接允许创建有机光电门。这是第一个低压有机光电开关接口，有可能在现代电子和光子学中找到应用。