Chin. J. Org. Chem. ›› 2017, Vol. 37 ›› Issue (10): 2457-2480.DOI: 10.6023/cjoc201704015 Previous Articles     Next Articles



谭继华a, 霍延平a,b, 蔡宁a, 籍少敏a, 李宗植a, 张力a   

  1. a 广东工业大学轻工化工学院 广州 510006;
    b 中国科学院上海有机化学研究所 有机氟化学中国科学院重点实验室 上海 200032
  • 收稿日期:2017-04-11 修回日期:2017-06-03 发布日期:2017-06-16
  • 通讯作者: 霍延平
  • 基金资助:


Progress on Donor-Acceptor Type Thermally Activated Delayed Fluorescence Based Blue Emitters

Tan Jihuaa, Huo Yanpinga,b, Cai Ninga, Ji Shaomina, Li Zongzhia, Zhang Lia   

  1. a School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006;
    b Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Cheimstry, Chinese Academy of Sciences, Shanghai 200032
  • Received:2017-04-11 Revised:2017-06-03 Published:2017-06-16
  • Contact: 10.6023/cjoc201704015
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos.61671162,21372051),the Science and Technology Planning Project of Guangdong Province (No.2016A010103031) and the Guangdong Provience Universities and Colleges Young Pearl River Scholar Funded Scheme (2016).

In thermally activated delayed fluorescence (TADF) based emitters, the excitons from the lowest triplet state (T1) can be efficiently upconverted into the lowest singlet (S1) state via reverse intersystem crossing (RISC) process due to the small energy gap (ΔEST) between their S1 and T1 states, harvesting both S1 and T1 excitons for emission, with non-noble metals, which can break the internal/external quantum efficiency (IQE/EQE) (≤25%/≤ 5%) limitation of conventional fluorescence based organic light-emitting diodes (OLEDs). Their no-noble metals feature makes them more competitive than phosphorescence materials in making OLEDs. Among the vast of TADF materials, eletrons donor-acceptor (D-A) type is one of the most popular TADF material due to their outstanding performance and convenience of preparation. On the other hand, efficient blue emitters are facing issues related to their stability and color purity that makes their development quite challenging for researchers. In this review, the D-A type blue TADF emitters and OLEDs reported recently are summarized, the mechanism of TADF based OLEDs and the principle of designs are elaborated, and a full vision of its development is made.

Key words: D-A type, thermally activated delayed fluorescence, blue emitter, organic light-emitting diode