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Wavelength-Selective Organic Photodetectors

机译：波长选择性有机光电探测器

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摘要

Spectroscopic sensing combined with optical imaging is crucial with respect to today's ever-growing demand for instant analytical techniques to be incorporated in various handheld and wearable devices. Further miniaturization and integration of such types of sensors is critical and wavelength-selective organic photodetectors (OPDs) may provide the required technology. In this progress report, some early OPD applications and their potential are presented. Crucial device parameters such as the specific detectivity, external quantum efficiency, and dark current density of visible and near-infrared wavelength-selective photodetectors are compared and assayed to theoretical and semi-empirical limits. The different organic detector approaches include the use of inherently narrow-band absorbers as well as internally filtered and microcavity devices. Each of these strategies comes with its own specific material and device design criteria, around which material development and selection should be centered to move beyond the current state of the art. As OPD technology matures, device stability becomes important and is hence also briefly discussed. Via this perspective, it is aimed to provide the reader with critical insights into the device physics and chemistry of wavelength-selective OPDs, hereby providing leverage for new ideas to bring this technology to the market.
机译：光谱传感与光学成像相结合，对于当今对当今的不断增长的瞬间分析技术的需求是至关重要的，其在各种手持式和可穿戴设备中结合。这种类型的传感器的进一步小型化和整合是关键的，并且波长选择性有机光电探测器（OPD）可以提供所需的技术。在此进度报告中，提出了一些早期的OPD应用及其潜力。比较和测定可见和近红外波长选择光电探测器的特定检测率，外部量子效率和暗电流密度的关键装置参数，并测定理论和半经验限制。不同的有机检测器方法包括使用固有的窄带吸收器以及内部过滤和微腔装置。这些策略中的每一个都采用了自己的特定材料和设备设计标准，周围的材料开发和选择应将其居中，以超越现有技术。随着OPD技术的成熟，设备稳定性变得重要，因此也简要讨论过。通过这种观点，旨在为读者提供对设备物理和波长选择性OPDS的化学性的关键洞察，从而为新想法提供杠杆，以将这种技术带到市场上。

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