Visible light communication (VLC) is a promising candidate to face the bandwidth limitation problems of traditional radio communication system. The use of a light emitting diode (LED), directly modulated, as a transmitter of the wireless telecommunication link permits the installation of VLC-based systems in practically all human-attended settings (home, office, markets). However, a drawback of VLC systems remains the receiver side, due to the lack of photovoltaic devices for this specific application. Organic electronics based on solution processed technologies has the great potential to be applied in VLC systems, building effective, scalable and low-cost photodetectors. We have investigated the effect of the device architecture on optical and electrical device performance, using both P3HT:PCBM and PTB7:PC70BM bulk-heterojunction active layers. We have established that both materials and structures could affect greatly the device properties, and we have provided an analytical representation of the spectral matching between light source and detector. In particular, the most promising device, based on a P3HT:PCBM blend, has demonstrated high performance, especially using an inverted structure. In this configuration, a device cut-off frequency of ∼1.0MHz has been achieved, paying the way to organic photodetector application on VLC-based telecommunication systems in 5G scenarios.

可见光通信（VLC）是面对传统无线电通信系统的带宽限制问题的有前途的候选者。使用直接调制的发光二极管（LED）作为无线电信链路的发送器，可以在几乎所有人类照管的环境（家庭，办公室，市场）中安装基于VLC的系统。然而，由于缺少用于该特定应用的光伏装置，VLC系统的缺点仍然是接收器侧。基于溶液处理技术的有机电子产品在VLC系统中具有巨大的潜力，可以构建有效，可扩展且低成本的光电探测器。我们已经使用P3HT：PCBM和PTB7：PC70BM体异质结有源层研究了器件架构对光学和电气器件性能的影响。我们已经确定材料和结构都可能极大地影响设备的性能，并且我们提供了光源和检测器之间光谱匹配的解析表示。特别是，基于P3HT：PCBM混合物的最有前途的设备已展示出高性能，尤其是使用倒置结构时。在此配置中，已实现了约1.0MHz的设备截止频率，为在5G场景中基于VLC的电信系统上有机光电检测器应用铺平了道路。特别是使用倒置结构。在这种配置下，已实现约1.0MHz的设备截止频率，为在5G场景中基于VLC的电信系统上有机光电检测器应用铺平了道路。特别是使用倒置结构。在这种配置下，已实现约1.0MHz的设备截止频率，为在5G场景中基于VLC的电信系统上有机光电检测器应用铺平了道路。