2-hydroxynaphthylidene-1’-naphthylamine (HNAN) and -NO₂ modified HNAN (HNAN-NO₂) Schiff base compounds were synthesized and exhibited strong visible light absorption (<650nm). These compounds were added to poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) ferroelectric polymer, obtaining composites with high photoelectric response under visible and infrared light. It was found that the modification of HNAN by the nitro group and the poling of the composites under a high electric field can greatly enhance the photoelectric response of the composites. The composites can generate high photovoltages of 1386 and 352.7 mV under irradiation with near-infrared light (915 nm) and green light (532 nm). The mechanism of the photoelectric response of the composites under green light was explored and it was found that the response originates mainly from the coupling effect of the photothermal effect of the Schiff base and the pyroelectric effect of the ferroelectric polymer. The composites, which can be utilized as photodetector materials, are promising for next-generation artificial retina applications and the sensing capability of retina can be extended in a wide wavelength range from visible to infrared light.

2-羟基萘-1'-萘胺（HNAN）和-NO ₂修饰的HNAN（HNAN-NO ₂合成了席夫碱化合物，并表现出很强的可见光吸收（​​<650nm）。将这些化合物添加到聚偏二氟乙烯-三氟乙烯（P（VDF-TrFE））铁电聚合物中，获得在可见光和红外光下具有高光电响应的复合材料。发现在高电场下通过硝基对HNAN的改性和复合材料的极化可以极大地增强复合材料的光电响应。在近红外光（915 nm）和绿光（532 nm）照射下，复合材料可产生1386和352.7 mV的高光电压。探索了复合材料在绿光下的光电响应机理，发现该响应主要源于席夫碱的光热效应和铁电聚合物的热电效应的耦合效应。可用作光电探测器材料的复合材料有望用于下一代人工视网膜应用，并且视网膜的传感能力可以在从可见光到红外光的较宽波长范围内扩展。