[1]张 洋,王 伟,陈 伟,等.热激活延迟荧光材料的光致发光研究[J].南京理工大学学报(自然科学版),2016,40(04):399.[doi:10.14177/j.cnki.32-1397n.2016.40.04.004]
　Zhang Yang,Wang Wei,Chen Wei,et al.Photoluminescence spectra of thermally activated delayed fluorescence emitter[J].Journal of Nanjing University of Science and Technology,2016,40(04):399.[doi:10.14177/j.cnki.32-1397n.2016.40.04.004]
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热激活延迟荧光材料的光致发光研究
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《南京理工大学学报》（自然科学版）[ISSN:1005-9830/CN:32-1397/N]

卷:
40卷
期数:
2016年04期
页码:
399
栏目:
出版日期:
2016-08-29

文章信息/Info

Title:
Photoluminescence spectra of thermally activated delayed fluorescence emitter
文章编号:
1005-9830(2016)04-0399-05
作者:
张 洋; 王 伟; 陈 伟; 杨 潇; 李 衡
南京理工大学 电子工程与光电技术学院,江苏 南京 210094
Author(s):
Zhang Yang; Wang Wei; Chen Wei; Yang Xiao; Li Heng
School of Electronic Engineering and Optoelectronic Technology,Nanjing University of Science and Technology,Nanjing 210094,China
关键词:
热激活延迟荧光材料;  光致发光强度;  分子间相互作用;  温度;  分子结构
Keywords:
thermally activated delayed fluorescence emitter;  photoluminescence;  molecular interaction;  temperature;  molecular structure
分类号:
O481.1
DOI:
10.14177/j.cnki.32-1397n.2016.40.04.004
摘要:
为了能够进一步理解分子结构和分子之间相互作用对热激活延迟荧光(Thermally activated delayed fluorescence,TADF)材料光物理过程的影响,该文研究了TADF材料2,4,5,6-四(9-咔唑基)-间苯二腈(2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene,4CzIPN)和2,3,5,6-四(3,6-二苯基-9-咔唑基)-对苯二腈(2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene,4CzTPN-Ph)薄膜在不同温度下的发光光谱。发现对于4CzIPN薄膜,在280 K附近,随着温度的增加,发光强度有反常增加的现象,该现象被归因于4CzIPN分子之间的相互作用在该温度下变弱。同时,在分子结构稍有不同的4CzTPN-Ph中,没有观察到类似现象。研究结果表明:分子结构可以用来调控薄膜中分子相互作用对发光过程的影响,从而进一步提高有机发光二极管的效率。
Abstract:
In order to understand the influence of molecular structure and molecular interaction on the light physical processes of the thermally activated delayed fluorescence emitter,photoluminescence spectroscopy of thermally activated delayed fluorescence(TADF)emitter,namely,2,4,5,6-tetrakis(carbazol-9-yl)-1,3-dicyanobenzene(4CzIPN)and its derivative,2,3,5,6-tetrakis(3,6-diphenylcarbazol-9-yl)-1,4-dicyanobenzene(4CzTPN-Ph)are studied.In 4CzIPN film,the photoluminescence intensity increases unexpectedly when temperature increases at 280K,which is ascribed to be the thermally weakening of molecular interaction.On the contrary,no such phenomenon is observed in 4CzTPN-Ph film.The results indicate that the molecular structure can be modified to adjust to molecular interaction's influence on photoluminescence processes,in order to enhance the efficiency of corresponding light emission diodes.

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备注/Memo

备注/Memo:
收稿日期:2015-09-28 修回日期:2015-12-15
基金项目:国家自然科学基金(61574078)
作者简介:张洋(1991-),男,硕士生,主要研究方向:光学工程,E-mail:654664658@qq.com; 通讯作者:李衡(1974-),女,博士,讲师,主要研究方向:微电子学与固体电子学,E-mail:hengli@njust.edu.cn。
引文格式:张洋,王伟,陈伟,等.热激活延迟荧光材料的光致发光研究[J].南京理工大学学报,2016,40(4):399-403.
投稿网址::http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2016-06-30