From printed organic photodiodes to printed image sensors (Conference Presentation)

U. Lemmer, Noah Strobel, Jonathan Lehr, R. Eckstein, G. Hernández-Sosa, Tobias Rödlmeier
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引用次数: 0

Abstract

Organic photodiodes (OPDs) have in recent years reached a level of performance comparable to their inorganic counterparts. Using additives like PMMA, we were able to tune the transparency and viscosity of a P3HT:PCBM photoactive blend while at the same time achieving a two-fold enhancement of the detection speed. Furthermore, we have developed approaches towards the digital realization of image sensors using aerosol jet printing and a direct-printed patterning technique utilizing the self organization of functional inks. These techniques allow for a reproducible deposition of multilayer devices with high registration accuracies and feature sizes down to a few microns. We present a comprehensive electrical and optical characterization of these printed image sensors. The devices exhibit specific detectivities of >1E12 Jones over a broad wavelength range (400-750 nm) and maximum responsivities of 0.25 A/W. An entirely printed matrix image sensor composing of 256 individual pixels with an individual active area of ≈250 μm × 300 μm was fabricated.
从印刷有机光电二极管到印刷图像传感器(会议报告)
近年来,有机光电二极管(OPDs)的性能已经达到了与无机光电二极管相当的水平。使用PMMA等添加剂,我们能够调整P3HT:PCBM光活性混合物的透明度和粘度,同时实现检测速度的两倍提高。此外,我们还开发了使用气溶胶喷射印刷和利用功能油墨自组织的直接印刷图案技术实现图像传感器数字实现的方法。这些技术允许具有高配准度和特征尺寸小到几微米的多层器件的可重复沉积。我们提出了这些印刷图像传感器的综合电学和光学特性。在较宽的波长范围内(400-750 nm),器件的特异探测率>1E12 Jones,最大响应率为0.25A/W。制作了一个由256个独立像素组成的全印刷矩阵图像传感器,单个有效面积为≈250 μm × 300 μm。
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