基于量子棒纳米纤维大面积定向排列的偏振增亮膜及其在宽色域显示中的应用

秦静; 温佐良; 李尚; 周子明; 郝俊杰; 吴丹; 刘皓宸; 陈威; 徐冰; 王丹; 陈锐; 王恺; 孙小卫

doi:10.3788/YJYXS20183304.0261

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基于量子棒纳米纤维大面积定向排列的偏振增亮膜及其在宽色域显示中的应用

材料与器件 | 更新时间：2020-07-06

- 基于量子棒纳米纤维大面积定向排列的偏振增亮膜及其在宽色域显示中的应用
- Large-scale active luminance film with enhanced polarization made of aligned quantum-rod-containing polymeric nanofibers for highly efficient and wide color gamut LCD displays
- 液晶与显示 2018年33卷第4期页码：261-270
- 作者机构：
  
  南方科技大学电子与电气工程系, 广东深圳 518055
- 作者简介：
  
  [ "秦静(1988-), 女, 河南南阳人, 硕士, 实验员, 2011年于河南大学获得学士学位, 2014年于深圳大学获得硕士学位, 同年于中国科学院深圳先进技术研究院获得联合培养证书, 现为南方科技大学工学院研实验员, 主要从事半导体纳米晶材料及其光电器件的研究。E-mail:qinj@sustc.edu.cn" ]
  [ "王恺(1983-), 男, 浙江余姚人, 博士, 2011年于华中科技大学获得博士学位, 现为南方科技大学助理教授(副教授职称), 主要从事半导体纳米晶材料(量子点、量子棒、钙钛矿等)及其光电器件(发光二极管、光电探测器等)的研究。E-mail:wangk@sustc.edu.cn" ]
  [ "孙小卫(1968-), 男, 天津人, 博士, 现为南方科技大学讲座教授, 国家千人, 电子与电气工程系主任, 兼任香港科技大学电子与计算机工程系兼职教授。任职于南科大前, 孙教授为新加坡南洋理工大学全职教授, 微电子中心主任。2009年被授予新加披南洋理工大学科技与创新奖, 2013年荣获加拿大国立科学研究院雅克-博利厄杰出研究主席奖。孙教授现为亚太材料学会会士, 是美国光学学会(OSA)、国际光学工程师学会(SPIE)、国际信息显示学会(SID)、英国皇家物理学会(loP)会士(Fellow)。创立了能源光子学学会(Society for Energy Photonics)并担任主席, 共同创立了新加坡-中国科学技术促进协会并任职副主席。目前主要从事能源光子学、宽禁带半导体材料和器件、激子光电子器件(OLED、QLED、X-LED)的研究, 在学术期刊共发表文章400多篇, H-指数为58。E-mail:sunxw@sustc.edu.cn" ]
- 基金信息：
  
  The National Key Research and Development Program of China administrated by the Ministry of Science and Technology of China(2016YFB0401702);XWS also thanks the start-up fund from Southern University of Science and Technology;Doctoral Fund of Ministry of Education of China(2017M612497);Doctoral Fund of Ministry of Education of China(2017M610484);Shenzhen Innovation Project(JCYJ20160301113537474);Shenzhen Innovation Project(JCYJ20160301113356947);Shenzhen Peacock Team Project(KQTD2016030111203005);Distinguished Young Scholar of Natural Science Foundation of Guangdong(2017B030306010);National Natural Science Foundation of China(61405089);National Natural Science Foundation of China(61674074);国家重点研发计划战略性先进电子材料重点专项(2016YFB0401702);南方科技大学启动基金;中国博士后基金(2017M612497);中国博士后基金(2017M610484);深圳市基础研究项目(JCYJ20160301113537474);深圳市基础研究项目(JCYJ20160301113356947);深圳市孔雀团队项目(KQTD2016030111203005);广东省自然科学杰出青年基金(2017B030306010);国家自然科学基金(61405089);国家自然科学基金(61674074)
- DOI：10.3788/YJYXS20183304.0261
  中图分类号： TP394.1;TH691.9
- 收稿日期：2017-11-20，
  
  录用日期：2017-12-18，
  
  纸质出版日期：2018-04-05
- 稿件说明：
移动端阅览
秦静, 温佐良, 李尚, 等. 基于量子棒纳米纤维大面积定向排列的偏振增亮膜及其在宽色域显示中的应用[J]. 液晶与显示, 2018,33(4):261-270.

Jing QIN, Zuo-liang WEN, Shang LI, et al. Large-scale active luminance film with enhanced polarization made of aligned quantum-rod-containing polymeric nanofibers for highly efficient and wide color gamut LCD displays[J]. Chinese journal of liquid crystals and displays, 2018, 33(4): 261-270.
秦静, 温佐良, 李尚, 等. 基于量子棒纳米纤维大面积定向排列的偏振增亮膜及其在宽色域显示中的应用[J]. 液晶与显示, 2018,33(4):261-270. DOI： 10.3788/YJYXS20183304.0261.

Jing QIN, Zuo-liang WEN, Shang LI, et al. Large-scale active luminance film with enhanced polarization made of aligned quantum-rod-containing polymeric nanofibers for highly efficient and wide color gamut LCD displays[J]. Chinese journal of liquid crystals and displays, 2018, 33(4): 261-270. DOI： 10.3788/YJYXS20183304.0261.

摘要

作为一种新兴的纳米材料，CdSe/CdS量子棒的偏振发光特性使其在应用于新型液晶显示中极具潜力，而如何将量子棒材料在宏观尺度上大面积的定向排列是实现该技术的关键性问题。在本文中，我们报道了一种大面积、含定向排列量子棒、基于PMMA纳米纤维制成的偏振增亮膜。首先，采用一种新的TBP辅助合成方法，合成出具有核壳结构的CdSe/CdS量子棒。该材料的绝对量子产率达到了60%，发光波长的半峰宽为25 nm，具有182 nm的大Stokes位移。随后将这些量子棒溶于氯仿、DMF和PMMA混合溶液中制备用于静电纺丝的纺丝液。通过静电纺丝技术，将含有量子棒的聚合物纳米纤维通过滚筒收集处理，得到了一张透明、大面积、偏振增强的增亮膜，5 cm

增亮膜的偏振度为0.45。最后将制备的增亮膜嵌入一个液晶显示模组中测试，结果显示该模组的亮度提高了18.4%。这一结果表明我们制备的量子棒增亮膜在新型宽色域高光效显示领域具有非常广阔的应用前景。

Abstract

CdSe/CdS quantum rods (QRs) with polarized light emission have great potential in the next generation liquid crystal displays (LCD) backlight. Aligning these QRs in large scale is the key for practical applications. In this paper

we report a large scale film made of aligned QRs in PMMA fibers. Making use of a new tributylphosphine (TBP)-assisted synthetic method

we firstly synthesized uniform CdSe/CdS QRs with high absolute quantum yield (QY) of 60%

narrow full width at half maximum (FWHM) of 25 nm and large Stokes shift of 182 nm. Then

these oil phase CdSe/CdS QRs (maintaining the high absolute QY) dissolved in the mixed solution of chloroform

dimethylformamide (DMF) and polymethyl methacrylate (PMMA) were used to electrospin aligned QR-containing PMMA nanofibers. Collecting these fibers by a roller

we were able to make large-scale active luminance film with enhanced polarization with these PMMA nanofibers aligned. For a 5 cm

size film

the polarization was measured to be 0.45. The film was further inserted into a mobile LCD for test and the brightness of LCD was enhanced by 18.4% with the film. Our results indicate that our aligned film is a very promising backlight solution for highly efficient and wide color gamut LCD displays.

关键词

Keywords

references

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