Ahmed Gaber Abdelmagid, Zhuoran Qiao, Boudewijn Coenegracht, Gaon Yu, Hassan A. Qureshi, Thomas D. Anthopoulos, Nicola Gasparini, Konstantinos S. Daskalakis
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引用次数: 0
摘要
窄带红外有机光电探测器在传感、成像和光谱应用中需求量很大,特别是在小型化至关重要的手持和可穿戴设备中。然而,大多数现有的窄带探测策略依赖于通过饱和吸收进行光谱滤波,这需要超过500 nm的有源层,限制了生产高质量薄膜材料的选择,或者腔效应,这固有地引入了强角色散。微腔激子-极化子模式是一种强激子-光子耦合产生的模式,近年来作为一种角色散抑制策略被探索用于有机光电子学。在这项工作中,提出了第一个窄带红外极化子有机光电二极管,它结合了不依赖角度的响应,在965 nm和-2 V处具有0.24 a W−1的创纪录高响应率。该器件具有由非富勒烯受体组成的100纳米薄有源层,其检测模式在半最大值处的全宽度小于30 nm,在±45°处的边际角色散小于15 nm。这项研究强调了极化作为开发下一代光电器件的创新平台的潜力,这些器件可以同时增强光学和电子性能。
Polaritons in Non-Fullerene Acceptors for High Responsivity Angle-Independent Organic Narrowband Infrared Photodiodes
Narrowband infrared organic photodetectors are in great demand for sensing, imaging, and spectroscopy applications, in particular for handheld and wearable devices, in which miniaturization is essential. However, most existing strategies for narrowband detection depend on spectral filtering either through saturable absorption, which requires active layers exceeding 500 nm, restricting the choice of materials for producing high-quality films, or cavity effects, which inherently introduce strong angular dispersion. Microcavity exciton-polariton (polariton) modes, which emerge from strong exciton-photon coupling, have recently been explored as an angular dispersion suppression strategy for organic optoelectronics. In this work, the first narrowband infrared polariton organic photodiode that combines angle-independent response with a record-high responsivity of 0.24 A W−1 at 965 nm and –2 V is presented. This device, featuring a 100-nm-thin active layer comprising a non-fullerene acceptor, exhibits a detection mode with a full-width at half-maximum of less than 30 nm and a marginal angular dispersion of under 15 nm across ±45°. This study highlights the potential of polaritons as an innovative platform for developing next-generation optoelectronic devices that achieve simultaneous enhancements in optical and electronic performance.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.