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溶液法制备PVP为界面修饰层的红荧烯结晶性薄膜
Rubrene Crystal Films Using PVP as Interface Modification Layer Fabricated by Solution Methods
- 发光学报 2018年39卷第2期 页码：148-155
- 作者机构：
1. 长春工业大学 化学工程学院,吉林 长春,130012
2. 长春理工大学 光电工程学院,吉林 长春,130022
- 作者简介：
- 基金信息：国家自然科学基金（21403016）();吉林省教育厅项目（2016326，JJKH20170556KJ）();吉林省科技厅重点攻关项目（20170204014SF）资
DOI：10.3788/fgxb20183902.0148
中图分类号： O649纸质出版日期：2018-2-5，
网络出版日期：2017-11-23，
收稿日期：2017-8-28，
修回日期：2017-10-23，
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李占国, 张沛沛, 张梁等. 溶液法制备PVP为界面修饰层的红荧烯结晶性薄膜[J]. 发光学报, 2018,39(2): 148-155
LI Zhan-guo, ZHANG Pei-pei, ZHANG Liang etc. Rubrene Crystal Films Using PVP as Interface Modification Layer Fabricated by Solution Methods[J]. Chinese Journal of Luminescence, 2018,39(2): 148-155
李占国, 张沛沛, 张梁等. 溶液法制备PVP为界面修饰层的红荧烯结晶性薄膜[J]. 发光学报, 2018,39(2): 148-155 DOI： 10.3788/fgxb20183902.0148.
LI Zhan-guo, ZHANG Pei-pei, ZHANG Liang etc. Rubrene Crystal Films Using PVP as Interface Modification Layer Fabricated by Solution Methods[J]. Chinese Journal of Luminescence, 2018,39(2): 148-155 DOI： 10.3788/fgxb20183902.0148.
摘要
为了获得低成本、高结晶度的红荧烯薄膜，采用溶液加工的方法和聚合物界面修饰层研究了红荧烯薄膜的性质。首先，通过旋涂方法在Si/SiO
2
衬底上先沉积一层聚乙烯吡咯烷酮（PVP）作为界面修饰层，利用偏光显微镜（POM）、原子力显微镜（AFM）研究了PVP层表面形貌及粗糙度。接着在PVP上滴涂红荧烯溶液后固化烘干，制备红荧烯晶体薄膜，研究了不同PVP浓度和不同成膜温度下界面修饰层对红荧烯表面形貌的影响。然后，利用X射线衍射（XRD）表征对比研究了薄膜的微观结构。最后，分析了红荧烯晶体薄膜的生长机制。实验结果表明：80~140℃及低浓度的PVP条件下能得到结晶度高、连续的红荧烯球晶，并且温度升高时，球晶尺寸变大。PVP作为界面修饰层有利于改善红荧烯的成膜性，制备高结晶度的晶体薄膜。
Abstract
In order to obtain the low cost and high crystalline thin films
the properties of rubrene films were investigated with Polyvinyl Pyrrolidone (PVP) as interface modification layer on the Si/SiO
2
substrate by solution process. First
PVP films were spin-coated on Si/SiO
2
substrate. The surface morphology and roughness (RMS) of PVP layer were analyzed by polarizing optical microscope (POM) and atomic force microscopy (AFM). Then
rubrene films were drop-coated on the PVP layer and dried out. The effects of PVP layer with the different PVP concentration and film-forming temperature on rubrene morphology were studied. The crystal structures of PVP films and rubrene films were carried out by X-ray diffraction. Finally
growth mechanism mode of rubrene films on the PVP interface modification layer was proposed. The results indicate that the temperature of 80-140℃ and lower concentration of PVP are apt to prepare spherulites with high crystallinity
and the crystals size becomes larger when the temperature increases. PVP used as interface modification layer is beneficial to improve film-forming property of rubrene and prepare crystalline films with high crystallinity.
关键词
溶液法聚乙烯吡咯烷酮界面修饰红荧烯晶体晶体形貌
Keywords
solution processPolyvinyl Pyrrolidone(PVP)interface modificationrubrene crystalscrystal morphology
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