近日，中国科学院化学所董焕丽团队报道了协同三发射实现单组分白色有机发光晶体管。相关论文于2026年2月26日发表在《德国应用化学》杂志上。

白光有机发光晶体管（OLETs）有望成为下一代智能显示器的核心组件。然而，由于缺乏同时具有高载流子迁移率和高效白光发射的理想材料，其发展受到了阻碍。

研究组提出了一种新颖的分子设计策略，通过协同利用单分子、激基缔合物和电激基复合物在同一材料中的发射，实现了白色电致发光。在该策略的指导下，设计并合成了2,6-双（二苯并[b,d]噻吩-3-基）蒽（DTA），其光致发光量子产率为35%，饱和空穴迁移率高达5.8 cm² V^-1 s^-1。值得注意的是，在单组分的OLET器件中，DTA展现出额外的电激基复合物发射。

这种红移的电激基复合物发射带与单分子、激基缔合物发射相结合，产生了广谱的白色电致发光，其国际照明委员会（CIE）色坐标为（0.3030, 0.3558）。此外，这三种发射物种的相对强度可以通过栅极电压进行动态调节，实现了白光色温的实时调控，并获得了高显色指数。这项工作为设计高迁移率白光发射材料建立了新范式，并朝着实现实用化的单组分白光OLETs迈出了重要一步。

附：英文原文

Title: Synergistic Tri-emission Enabling Single-Component White Organic Light-Emitting Transistors

Author: Xiangyu Tan, Sheng-hong Zhao, Qingbin Li, Shaoqing Guan, Zhengsheng Qin, Ziyi Xie, Pu Wang, Can Gao, Bing Sun, Huanli Dong, Hao-Li Zhang

Issue&Volume: 2026-02-26

Abstract: White organic light-emitting transistors (OLETs) are poised to be pivotal components in next generation smart displays. However, their development is hindered by the scarcity of ideal materials that concurrently exhibit high charge carrier mobility and efficient white-light emission. Herein, we present a novel molecular design strategy that achieves white electroluminescence by synergistically harnessing emissions from the monomer, excimer, and electromer within a single material. Guided by this approach, we designed and synthesized 2,6-bis(dibenzo[b,d]thiophen-3-yl)anthracene (DTA), which exhibits a photoluminescence quantum yield of 35% and a high saturation hole mobility of 5.8 cm2 V1 s1. Remarkably, in single-component OLET devices, DTA manifests an additional electromer emission. The combination of this red-shifted electromer band with the monomer and excimer emissions results in broad-spectrum white electroluminescence, with Commission Internationale de l'Eclairage coordinates of (0.3030, 0.3558). Moreover, the relative intensities of these three emissive species can be dynamically modulated by the gate voltage, enabling real-time tuning of the white color temperature and achieving a high color-rendering index. This work establishes a new design paradigm for high-mobility white-light emitters and represents a significant stride toward practical single-component white OLETs.

DOI: 10.1002/anie.202524614

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202524614