Synergistic Tri‐emission Enabling Single‐Component White Organic Light‐Emitting Transistors
Abstract
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 cm 2 V −1 s −1 . 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.
Article Details
Authors (11)
Xiangyu Tan
State Key Laboratory of Applied Organic Chemistry (SKLAOC) Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou China
Sheng‐hong Zhao
State Key Laboratory of Applied Organic Chemistry (SKLAOC) Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou China
Qingbin Li
Beijing National Laboratory For Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry, Chinese Academy of Sciences Beijing China
Shaoqing Guan
Beijing National Laboratory For Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry, Chinese Academy of Sciences Beijing China
Zhengsheng Qin
Beijing National Laboratory For Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry, Chinese Academy of Sciences Beijing China
Ziyi Xie
Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Pu Wang
Can Gao
Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Bing Sun
Huanli Dong
Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Hao‐Li Zhang
State Key Laboratory of Natural Product Chemistry Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou P.R. China