Achieving a 32% EQE solution-processed simple structure OLED via exciplex system

有机发光二极管 系统间交叉 准分子 磷光 量子效率 激子 量子产额 光电子学 共发射极 材料科学 光致发光 二极管 单重态 荧光 纳米技术 原子物理学 光学 激发态 物理 量子力学 图层(电子)
作者
Kiran Kishore Kesavan,Jayachandran Jayakumar,Ming Lee,Herbert Chen,Sujith Sudheendran Swayamprabha,Deepak Kumar Dubey,Fu‐Ching Tung,Ching‐Wu Wang,Jwo‐Huei Jou
出处
期刊:Chemical Engineering Journal [Elsevier]
卷期号:435: 134879-134879 被引量:25
标识
DOI:10.1016/j.cej.2022.134879
摘要

Exciton generation and charge balance play a dominant character in organic light-emitting diode (OLED). Performance concerning power management is a crucial requirement in consumer electronics. Improving exciton generation requires key considerations, such as excellent intermolecular charge transfer and high predisposition for effective electron-hole recombination in suitable energy levels with high delayed fluorescent quantum yield and reduced non-radiative decay. Forming exciplex by physically blending with suitable material provides the feasibility in tailoring the parameters mentioned above for effectively improving the exciton generation. Herein, we comprehensively study the exciplex forming host by blending the carbazole-based hole transporting material BCC-36 with triazine-based materials PO-T2T, and 3P-T2T as electron transporting material designed and investigated. Developed exciplex formation host showed a high photoluminescent quantum yield of 90% with prolonged emission, representing our exciplex system with good TADF ability. Thus, effective utilization of non-radiative triplet excitons via reverse intersystem crossing results in high device performance with a maximum external quantum efficiency (EQE) of 20% and the current efficacy of 41 cd A−1 by using the exciplex system as a sole emitter. In addition, the high-performing exciplex system was investigated as a co-host for conventional fluorescent (C545T), phosphorescent (Ir(ppy)2(acac)) and TADF (4CzIPN) compounds as the emitters are utilized for high-efficiency OLEDs. Remarkably, the corresponding doped device system showed a high EQE of 12.5 % (C545T), 32.5% (Ir(ppy)2(acac)) and 26.5% (4CzIPN) under optimized solution-processed device conditions.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
SciGPT应助漂亮妙柏采纳,获得10
1秒前
2秒前
3秒前
Sparrow完成签到 ,获得积分10
4秒前
洋洋洋耶完成签到,获得积分10
5秒前
齐俞如完成签到,获得积分20
5秒前
zhanghenhao发布了新的文献求助10
5秒前
6秒前
景飞丹发布了新的文献求助10
7秒前
7秒前
上官若男应助yx采纳,获得10
7秒前
00关注了科研通微信公众号
7秒前
佟翠芙发布了新的文献求助10
8秒前
8秒前
来一斤这种鱼完成签到 ,获得积分10
8秒前
ying完成签到 ,获得积分10
8秒前
嘀嘀嘀发布了新的文献求助10
8秒前
徐liang发布了新的文献求助10
8秒前
9秒前
尊敬湘完成签到,获得积分10
9秒前
10秒前
Ting完成签到,获得积分10
10秒前
iNk应助知足且上进采纳,获得20
10秒前
Daisy发布了新的文献求助10
11秒前
酷波er应助张存银采纳,获得10
11秒前
柒月完成签到,获得积分10
11秒前
张张发布了新的文献求助10
12秒前
英俊的铭应助微笑的半邪采纳,获得10
12秒前
zryyy发布了新的文献求助10
12秒前
12秒前
景飞丹完成签到,获得积分10
12秒前
12秒前
爆米花应助尊敬湘采纳,获得10
13秒前
传奇3应助amy采纳,获得30
13秒前
852应助SUE采纳,获得10
13秒前
临床小白艰难求学完成签到,获得积分10
13秒前
13秒前
活A完成签到,获得积分10
13秒前
Ting发布了新的文献求助10
13秒前
高分求助中
Evolution 10000
Sustainability in Tides Chemistry 2800
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
An Introduction to Geographical and Urban Economics: A Spiky World Book by Charles van Marrewijk, Harry Garretsen, and Steven Brakman 500
Diagnostic immunohistochemistry : theranostic and genomic applications 6th Edition 500
Chen Hansheng: China’s Last Romantic Revolutionary 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3151089
求助须知:如何正确求助?哪些是违规求助? 2802543
关于积分的说明 7848537
捐赠科研通 2459877
什么是DOI,文献DOI怎么找? 1309380
科研通“疑难数据库(出版商)”最低求助积分说明 628897
版权声明 601757