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

doi:10.6023/cjoc201704015

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

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电子给体-受体型热活化延迟荧光蓝光材料研究进展

谭继华^a, 霍延平^a,b, 蔡宁^a, 籍少敏^a, 李宗植^a, 张力^a

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 E-mail:organicteacherhuo@126.com
基金资助:
国家自然科学基金（Nos.61671162，21372051）、广东省科技计划（No.2016A010103031）及广东省高等学校青年珠江学者岗位计划（2016）资助项目.

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

Tan Jihua^a, Huo Yanping^a,b, Cai Ning^a, Ji Shaomin^a, Li Zongzhi^a, Zhang Li^a

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 E-mail:organicteacherhuo@126.com
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 (ΔE_ST) 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

Cite this article

Tan Jihua, Huo Yanping, Cai Ning, Ji Shaomin, Li Zongzhi, Zhang Li. Progress on Donor-Acceptor Type Thermally Activated Delayed Fluorescence Based Blue Emitters[J]. Chin. J. Org. Chem., 2017, 37(10): 2457-2480.

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电子给体-受体型热活化延迟荧光蓝光材料研究进展

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

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