講演情報
[9p-C214-14]Skin-Conformal MHz-Speed Organic Photodetectors for Angle-Free, Long-Range Near-Infrared Communication
〇(D)Jaehyun Kim1,2, Sunghoon Lee1,3, Takao Someya1,3, Sungjun Park1,2 (1.RIKEN, 2.Ajou Univ., 3.Univ.Tokyo)
キーワード：
near-infrared organic photodiode、skin-conformal、near-infrared wireless communication
Near-infrared organic photodetectors (NIR-OPDs) utilize adjustable optoelectronic characteristics to deliver excellent sensitivity in low-light scenarios while ensuring quick response times1. Their flexible design guarantees stable functionality even when deformed. Moderate approaches to attaining rapid performance and precise detection capabilities were the engineering of photoactive materials at the molecular level and the formation of a highly crystalline photoactive layer to improve charge transport efficiency and hasten carrier dynamics2. However, these methods compromised mechanical flexibility, resulting in cracking or delamination under mechanical deformations3. Therefore, achieving high electrical characteristics of NIR-OPDs while undergoing mechanical deformation has been considered a significant challenge.
In this study, we developed the first skin-conformal NIR-OPD for the NIR wireless communication receiver that operates at MHz-scale speed without angular or distance limitations. The cascaded hole-transport layer of carbazole-based phosphonic acid (PACz) layer and molybdenum trioxide (MoO3) layer promotes efficient carrier extraction without additional synthesis or crystallization of photoactive material, thereby enhancing the photoresponse speed of the device while maintaining the mechanical stability of NIR-OPDs. Leveraging this exceptional performance, we established a stable, high-speed data transmission system over a wide range of incident angles (0–90°), supporting reliable long-range operation on complex geometries.
In this study, we developed the first skin-conformal NIR-OPD for the NIR wireless communication receiver that operates at MHz-scale speed without angular or distance limitations. The cascaded hole-transport layer of carbazole-based phosphonic acid (PACz) layer and molybdenum trioxide (MoO3) layer promotes efficient carrier extraction without additional synthesis or crystallization of photoactive material, thereby enhancing the photoresponse speed of the device while maintaining the mechanical stability of NIR-OPDs. Leveraging this exceptional performance, we established a stable, high-speed data transmission system over a wide range of incident angles (0–90°), supporting reliable long-range operation on complex geometries.