Organic photodetectors (OPDs) are preferred for use in biological sensing applications owing to their mechanical flexibility and good optical characteristics. To enhance the sensitivity of OPDs, a photomultiplication-type OPD (PMOPD), which can produce amplification at two terminals, has been developed. However, the stability of this photodetector is an issue when it is used in image sensors or other applications. In this study, an air-stable PMOPD with a PBDTTT-OFT:PC₆₁BM active layer that has high responsivity in the near-infrared region is developed. Furthermore, an OPD with a removable top electrode has been developed. Using this new device structure, the authors can directly and continuously evaluate the active layer of the device after using it in the air. It has been observed that the device does not exhibit any chemical changes in the active layer.

中文翻译：

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空气稳定光电倍增型有机光电探测器的研制及可拆卸顶电极活性层分析

有机光电探测器 (OPD) 因其机械灵活性和良好的光学特性而被首选用于生物传感应用。为了提高 OPD 的灵敏度，已经开发了一种可以在两个末端产生放大的光电倍增型 OPD (PMOPD)。然而，当它用于图像传感器或其他应用时，这种光电探测器的稳定性是一个问题。在这项研究中，具有 PBDTTT-OFT:PC _{61的空气稳定 PMOPD}开发了在近红外区域具有高响应性的BM有源层。此外，还开发了具有可拆卸顶部电极的 OPD。使用这种新的器件结构，作者可以在空中使用后直接连续地评估器件的有源层。已经观察到该器件在有源层中没有表现出任何化学变化。