A new fabrication method to realize fully-printed organic photodiode (OPD) arrays capable of RGB light separation is presented. From the photocurrents generated by each pixel type under the light from RGB LEDs, we demonstrate that this “White”, “Yellow” and “Red” array can successfully detect and reconstruct colors in the RGB system, with an average accuracy of 98.5%. A flexible broadband OPD array is printed on PEN substrate by blade-coating PEDOT:PSS, a polyethylenimine cathode interlayer and the photo-active layer, and screen-printing on top a patterned PEDOT:PSS anode. The OPD array achieves an average EQE of ∼37% at −4 V bias over the whole visible spectrum, 5 orders of magnitude of linear dynamic range (LDR), a 0.5 nA/cm² dark current, and maintains these performances in ambient conditions for more than 30 h. Pixels detecting “White”, “Yellow” and “Red” are fabricated by spray-coating two color filters. The substrate is used as a separator between the filters and OPD array. This physical separation allows solution processing of the filters regardless of their electrical properties or of the compatibility of their solvents with the OPD, thus broadening the choice of filter materials while offering a simple fabrication process. The combination of broadband OPD and broadband filters used in this configuration can significantly simplify the fabrication of spectrally-selective photosensors and full-color imagers.

提出了一种新的制造方法，以实现能够进行RGB分光的全印刷有机光电二极管（OPD）阵列。从RGB LED的光下每种像素类型产生的光电流中，我们证明了这种“白色”，“黄色”和“红色”阵列可以成功检测和重建RGB系统中的颜色，平均精度为98.5％。通过对PEDOT：PSS，聚乙烯亚胺阴极夹层和光敏层进行刮涂，在丝网上印刷图案化的PEDOT：PSS阳极，从而在PEN基板上印刷柔性宽带OPD阵列。在整个可见光谱范围内，在-4 V偏压下，OPD阵列的平均EQE为〜37％，线性动态范围（LDR）的5个数量级，0.5 nA / cm ²暗电流，并在环境条件下保持这些性能超过30小时。通过喷涂两个滤色镜来制作检测“白色”，“黄色”和“红色”的像素。基板用作滤光片和OPD阵列之间的分隔物。这种物理分离允许对过滤器进行溶液处理，而不管其电性能或溶剂与OPD的相容性如何，从而在提供简单制造过程的同时，拓宽了过滤器材料的选择范围。此配置中使用的宽带OPD和宽带滤光片的组合可以显着简化光谱选择光电传感器和全色成像仪的制造。