This paper reports on the memory characteristics of solution-processed organic phototransistors (OPTs) based on poly(3-hexylthiophene) with organic semiconductor floating gates and their application to image sensors. The addition of a small amount of soluble fullerene to the floating-gate layer enhances the erasing characteristics, which helps increase the on- and off-current ratio of the OPT memories. Furthermore, the OPT memories can achieve a long extrapolated retention time (>10⁹s) and high photosensitivity upon illumination of as weak as 10μW cm^‒2. A black and white pattern printed on paper can be imaged using the solution-processed OPT memory array.

本文报告了基于聚（3-己基噻吩）和有机半导体浮栅的溶液处理有机光电晶体管 (OPT) 的存储器特性及其在图像传感器中的应用。向浮栅层添加少量可溶性富勒烯可增强擦除特性，有助于提高 OPT 存储器的导通和截止电流比。此外，OPT 存储器可以在低至10 μ W cm ^{‒2 的}弱光照下实现长外推保留时间（> 10 ⁹ s）和高光敏性。打印在纸上的黑白图案可以使用经过溶液处理的 OPT 存储器阵列成像。