Dual-mode narrowband organic photodetectors for self-aligned imaging in NIR-I and NIR-II.

IF 15.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Nature Communications Pub Date : 2025-08-04 DOI:10.1038/s41467-025-62394-6

Yu Tang,Zhuangmiao Wang,Mingsheng Gao,Jiayin Han,Leiming Yuan,Furong Zhu

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Abstract

The ability to detect and image in the near-infrared (NIR) regions, specifically NIR-I (700-900 nm) and NIR-II (1000-1700 nm), is crucial for medical diagnostics and bioimaging due to their exceptional tissue penetration and absorption characteristics. Organic photodetectors (OPDs) present a promising solution for self-aligned imaging in these regions, due to their tunable optoelectronic properties and flexible fabrication processes. However, achieving high-performance dual-mode narrowband OPDs for NIR-I and NIR-II detection remains a significant challenge due to the inherently broadband nature of most organic semiconductor materials. In this study, we introduce a bias-switchable dual-mode narrowband OPD with a back-to-back stacked charge collection narrowing/photodiode-type double bulk heterojunction (BHJ) architecture. The dual-mode narrowband OPD exhibits excellent wavelength selectivity and enhanced imaging capabilities, facilitating self-aligned imaging in both NIR-I and NIR-II regions. Additionally, the double BHJ architecture provides design flexibility, allowing for the realization of dual-mode narrowband responses through various BHJ configurations.

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用于nir - 1和NIR-II自对准成像的双模窄带有机光电探测器。

近红外（NIR）区域的检测和成像能力，特别是NIR- i （700-900 nm）和NIR- ii (1000-1700 nm)，由于其特殊的组织渗透和吸收特性，对医学诊断和生物成像至关重要。有机光电探测器（OPDs）由于其可调谐的光电特性和灵活的制造工艺，为这些区域的自对准成像提供了一个很有前途的解决方案。然而，由于大多数有机半导体材料固有的宽带特性，实现用于NIR-I和NIR-II检测的高性能双模窄带opd仍然是一个重大挑战。在这项研究中，我们介绍了一种具有背靠背堆叠电荷收集窄化/光电二极管型双体异质结（BHJ）结构的偏置可切换双模窄带OPD。双模窄带OPD具有出色的波长选择性和增强的成像能力，可促进NIR-I和NIR-II区域的自对准成像。此外，双BHJ结构提供了设计灵活性，允许通过各种BHJ配置实现双模窄带响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Communications Biological Science Disciplines-

CiteScore

24.90

自引率

2.40%

发文量

6928

审稿时长

3.7 months

期刊介绍： Nature Communications, an open-access journal, publishes high-quality research spanning all areas of the natural sciences. Papers featured in the journal showcase significant advances relevant to specialists in each respective field. With a 2-year impact factor of 16.6 (2022) and a median time of 8 days from submission to the first editorial decision, Nature Communications is committed to rapid dissemination of research findings. As a multidisciplinary journal, it welcomes contributions from biological, health, physical, chemical, Earth, social, mathematical, applied, and engineering sciences, aiming to highlight important breakthroughs within each domain.