Emission of Electroplex in PVK and Its Properties under UV Irradiation

SUN Li; SHAO Xi-bin; QIAN Lei; ZHAO Su-ling

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Emission of Electroplex in PVK and Its Properties under UV Irradiation

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- Emission of Electroplex in PVK and Its Properties under UV Irradiation
- Chinese Journal of Luminescence Vol. 31, Issue 3, Pages: 331-336(2010)
- 作者机构：
  
  1. 北京交通大学光电子技术研究所北京,100044
  2. 京东方科技集团股份有限公司中央研究院北京,100016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN383.1
- Received：11 July 2009，
  
  Revised：1900-1-2，
  
  Published Online：30 June 2010，
  
  Published：30 June 2010
- 稿件说明：
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SUN Li, SHAO Xi-bin, QIAN Lei, et al. Emission of Electroplex in PVK and Its Properties under UV Irradiation[J]. Chinese Journal of Luminescence, 2010, 31(3): 331-336.
DOI：

SUN Li, SHAO Xi-bin, QIAN Lei, et al. Emission of Electroplex in PVK and Its Properties under UV Irradiation[J]. Chinese Journal of Luminescence, 2010, 31(3): 331-336. DOI：

摘要

用不同溶剂中的前驱物旋涂成PVK层

制备了ITO/PEDOT ∶ PSS/PVK/Ca ∶ Al器件

以及相同结构不同PVK分子量的器件。通过测试分析认为:器件的电致发光谱中590 nm波长处的发光峰来自于PVK三线态的激基复合物

并且发现其强度依赖于PVK的分子构型

即在PVK分子中相邻咔唑基团重叠程度。通过比较不同紫外辐照剂量后的PVK器件的发光

发现适度的UV辐照后的PVK分子构型中相邻咔唑基团处于全重叠的状态增加

在电致发光时会形成更多的三线态激子

因而提高了PLED器件的发光效率。

Abstract

Polymer light-emitting devices(PLED) with the structure as ITO/PEDOT ∶ PSS/PVK/Ca ∶ Al were fabricated by spincoating PVK precursor dissolved in different solvent as emitting layer. Meanwhile

those with same structure and varied PVK molecular weight were prepared. In experiment

the peak at 590 nm was found in EL spectra and was assigned to triplet excimer in PVK layer. The intensity of the peak is depend on molecular configuration of PVK

that is on what extent the adjacent carbazole groups overlap in PVK molecule. It was found that the number of the state

that adjacent carbazole groups are completely overlapped increases in PVK molecula after proper UV irradiating. Under this condition

more triplet excitons could are generated and luminance efficiency is improved.

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references

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. Potter R J. Highly Efficient OLEDs with Phosphorescent Materials [M]. Edited by Yersin H, Weinheim Germany: Wiley-VCH, 2008, 109. Received date : 2009-07-11 EI简介《工程索引》(The Engineering Index,简称EI)创刊于1884年,是美国工程信息公司(Engineering information Inc.)出版的著名工程技术类综合性检索工具。EI每月出版1期,文摘1.3万至1.4万条;每期附有主题索引与作者索引;每年还另外出版年卷本和年度索引,年度索引还增加了作者单位索引。出版形式有印刷版(期刊形式)、电子版(磁带)及缩微胶片。EI选用世界上工程技术类几十个国家和地区15个语种的3 500余种期刊和1 000余种会议录、科技报告、标准、图书等出版物。年报道文献量16万余条。收录文献几乎涉及工程技术各个领域。例如:动力、电工、电子、自动控制、矿冶、金属工艺、机械制造、土建、水利等。它具有综合性强、资料来源广、地理覆盖面广、报道量大、报道质量高、权威性强等特点。 EI Compendex是全世界最早的工程文摘来源。EI Compendex数据库每年新增的50万条文摘索引信息分别来自5 100种工程期刊、会议文集和技术报告。EI Compendex收录的文献涵盖了所有的工程领域,其中大约22%为会议文献,90%的文献语种是英文。EI公司在1992年开始收录中国期刊。1998年EI在清华大学图书馆建立了EI中国镜像站。2009年以前,EI把它收录的论文分为两个档次。1.EI Compendex 标引文摘 (也称核心数据)。它收录论文的题录、摘要,并以主题词、分类号进行标引深加工。有没有主题词和分类号是判断论文,是否被EI正式收录的唯一标志。2.EI Page One题录 (也称非核心数据)。主要以题录形式报道。有的也带有摘要,但未进行深加工,没有主题词和分类号。所以Page One 带有文摘不一定算做正式进入EI。 EI Compendex数据库从2009年1月起,所收录的中国期刊数据不再分核心数据和非核心数据。EI 对稿件内容和学术水平的要求 1. 具有较高的学术水平的工程论文, 包括的学科有: 机械工程、机电工程、船舶工程、制造技术等; 矿业、冶金、材料工程、金属材料、有色金属、陶瓷、塑料及聚合物工程等; 土木工程、建筑工程、结构工程、海洋工程、水利工程等; 电气工程、电厂、电子工程、通讯、自动控制、计算机、计算技术、软件、航空航天技术等; 化学工程、石油化工、燃烧技术、生物技术、轻工纺织、食品工业; 工程管理。

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