• 回答数

    2

  • 浏览数

    301

腾瑞水暖卫浴
首页 > 期刊论文 > 光电器件论文

2个回答 默认排序
  • 默认排序
  • 按时间排序

gaga1001mary

已采纳

电荷注入不平衡是制约钙钛矿型发光二极管(PeLEDs)效率的主要问题之一。通过对多空穴传输层的器件结构进行了设计,成功地实现了高效的PeLEDs器件。然而,在一个典型的溶液法制备的PeLEDs中,多层HTL很容易被下一层的油墨重新溶解,这不仅严重恶化了HTLs的电性能,而且影响了顶层钙钛矿薄膜的质量。

来自苏州大学的研究人员针对这一现象, 通过在HTLs和钙钛矿层之间插入一层薄的原子层沉积氧化铝(Al2O3)层,成功的改善了界面接触,从而获得具有增强特性和平衡电荷注入的钙钛矿薄膜。 另外,由于适当的折射率(r),Al2O3层的存在也有利于PeLEDs的出光耦合。结果表明,所制备的绿色PeLEDs具有良好的重复性和17.0%的外量子效率,比不添加Al2O3的器件提高约60%。该工作为提高钙钛矿型光电器件中电荷传输层与钙钛矿之间的界面接触提供了一条很有前途的途径。相关论文以题目为“High Efficiency Perovskite Light-Emitting Diodes with Improved Interfacial Contact”发表在ACS Applied Materials & Interfaces 期刊上。

论文链接:

金属卤化物钙钛矿由于其独特的光电特性,是一种很有前途的发光二极管材料。在过去的几年里在器件方面取得了重大进展。在典型的PeLEDs中,器件通常由电极、电子传输层(ETL)、发射层(EML)和空穴传输层(HTL)组成。良好的能量水平校准是提高电荷注入效率的关键。切相关,因此迫切需要开发有效的方法来增强电荷传输层与EML之间的界面接触。在这种情况下,需要在钙钛矿薄膜和电荷传输层之间形成一个更可控、质量更高的界面层。在这里,作者开发了一种通过在中间插入原子层沉积处理过的氧化铝层来提高界面质量的方法。得到了很大改善的界面接触,同时也增强了钙钛矿前驱体在其上的润湿性,从而促进了高质量钙钛矿薄膜的形成。

图1.(a)底层再溶解示意图。(b)ITO / TFB / PVK的AFM高度和线扫描。 AFM图像的扫描区域为5μm×5μm。(c)ITO / TFB / PVK / Al2O3的AFM高度和线扫描(n = 50)。 AFM图像的扫描区域为5μm×5μm。

图2.(a)用不同循环Al2O3层覆盖的TFB / PVK的水接触角。(b)TFB / PVK / Al2O3(n = 0、30、50和70)上钙钛矿薄膜的SEM图像和(c)AFM图像。SEM图像的比例尺为200 nm。AFM图像的扫描区域为10μm×10μm。

图3.(a)沉积在TFB / PVK / Al2O3上的钙钛矿薄膜的PL强度(n = 0、30、50和70)。(b)沉积在TFB / PVK / Al2O3上的钙钛矿膜的PL强度与时间的关系(n = 0、30、50和70)。(c)具有不同循环Al2O3层的器件在514 nm波长处的模拟光通量。

图4.(a)具有ITO / TFB / PVK / Al2O3/钙钛矿/ TPBi /LiF / Al结构(n = 50)的器件的截面SEM图像。(b)PeLED器件结构的能量图。(c)具有n = 0、30、50和70的器件的J-V-L曲线。(d)具有或不具有Al2O3(n = 50)层的器件的EQE-J曲线。(e)n = 0、30、50和70的器件的EQE分布。(f)不使用(W / O)或使用Al2O3(n = 50)的器件的工作时间,其亮度衰减。

(文:爱新觉罗星)

87 评论

飞雪樱子

新型磷光功能材料的设计、合成及其发光性质研究:1. Shujuan Liu, Wenjuan Xu, Tingchun Ma, Qiang Zhao,* Quli Fan, Qidan Ling, Wei Huang,* Effects of Temperature and Solvent on the Energy Transfer and β-Phase Formation in the Iridium(III) Complex-containing Polyfluorene in Solutions and as Suspended Nano-particles. Macromolecular Rapid Communications, 2010, 31, 629–633. (通讯作者)2. Shujuan Liu, Shi Sun, Chuanming Wang, Qiang Zhao,* Huibin Sun, Fuyou Li, Quli Fan, and Wei Huang,* DFT/TDDFT Investigation of the Modulation of Photochromic Properties in an Organoboron-Based Diarylethene by Fluoride Ions. ChemPhysChem, 2011, 12, 313-321.(通讯作者)3. Qiang Zhao, Lei Li, Fuyou Li, Mengxiao Yu, Zhipan Liu, Tao Yi, Chunhui Huang. Aggregation-induced Phosphorescent Emission (AIPE) of Iridium(III) Complexes. Chemical Communications, 2008, 685-687.4. Shujuan Liu, Qiang Zhao, Quli Fan, Wei Huang. A Series of New Red-Light Emitting Ionic Iridium Complexes: Structures, Excited State Properties and Application in Electroluminescent Device. European Journal of Inorganic Chemistry, 2008, 2177-2185.5. Qiang Zhao, Shujuan Liu, Mei Shi, Chuanming Wang, Mengxiao Yu, Lei Li, Fuyou Li, Tao Yi, Chunhui Huang. Series of New Cationic Iridium (III) Complexes with Tunable Emission Wavelength and Excited State Properties: Structures, Theoretical Calculations, and Photophysical and Electrochemical Properties. Inorganic Chemistry, 2006, 45, 6152-6160.6. Shujuan Liu, Qiang Zhao, Runfeng Chen, Yun Deng, Quli Fan, Fuyou Li, Lianhui Wang, Chunhui Huang, Wei Huang. π-Conjugated Chelating Polymers with Charged Iridium Complexes in the Backbones: Synthesis, Characterization, Energy Transfer, and Electrochemical Properties. Chemistry-A European Journal, 2006, 12, 4351-4361.基于磷光功能材料的高效光电器件的研究:1. Shu-Juan Liu, Zhen-Hua Lin, Qiang Zhao,* Yun Ma, Hui-Fang Shi, Ming-Dong Yi, Qi-Dan Ling, Qu-Li Fan, Chun-Xiang Zhu,* En-Tang Kang, and Wei Huang,* Flash Memory Effect for Polyfluorenes with On-Chain Iridium(III) Complexes. Advanced Functional Materials, 2011, 21, 979-985. (通讯作者)2. Qiang Zhao, Changyun Jiang, Mei Shi, Fuyou Li, Tao Yi, Yong Cao, Chunhui Huang. Synthesis and Photophysical, Electrochemical, and Electrophosphorescent Properties of a Series of Iridium (III) Complexes Based on Quinoline Derivatives and Different β-Diketonate Ligands. Organometallics, 2006, 25, 3631-3638.3. Shujuan Liu, Qiang Zhao, Yijie Xia, Yun Deng, Jian Lin, Quli Fan, Lianhui Wang, Wei Huang. π-Conjugated Chelating Polymers with Charged Iridium Complexes in the Backbones: Towards Saturated-Red Phosphorescent Polymer Light-Emitting Diodes. The Journal of Physical Chemistry C, 2007, 111, 1166-1175.磷光功能材料在化学/生物检测及生物成像中的应用研究:1. Wenjuan Xu, Shujuan Liu, Huibin Sun, Xinyan Zhao, Qiang Zhao, Shi Sun, Shan Cheng, Tingchun Ma, Lixia Zhou, Wei Huang, FRET-based Probe for Fluoride based on Phosphorescent Iridium(III) Complex Containing Triarylboron Groups, Journal of Materials Chemistry, DOI: 10.1039/C1JM00071C.(通讯作者)2. Huazhou Wu, Tianshe Yang, Qiang Zhao,* Jing Zhou, Chunyan Li, Fuyou Li,* A Cyclometalated Iridium(III) Complex with Enhanced Phosphorescence Emission in the Solid State (EPESS): Synthesis, Characterization, and its Application in Bioimaging. Dalton Transactions, 2011, 40, 1969-1976. (通讯作者).3. Huifang Shi, Shujuan Liu, Huibin Sun, Wenjuan Xu, Zhongfu An, Jian Chen, Shi Sun, Xiaomei Lu, Qiang Zhao,* Wei Huang,* Simple Conjugated Polymers with On-Chain Phosphorescent Iridium(III) Complexes: Toward Ratiometric Chemodosimeters for Detecting Trace Amount of Hg2+. Chemistry-A European Journal, 2010, 16, 12158-12167. (通讯作者)4. Wenjuan Xu, Shujuan Liu, Xinyan Zhao, Shi Sun, Shan Cheng, Tingchun Ma, Huibin Sun, Qiang Zhao,* Wei Huang,* Cationic Iridium(III) Complex Containing both Triarylboron and Carbazole Moieties as Ratiometric Fluoride Probe Utilizing the Switchable Triplet-Singlet Emission. Chemistry-A European Journal, 2010, 16, 7125- 7133. (通讯作者)5. Qiang Zhao, Mengxiao Yu, Linxi Shi, Shujuan Liu, Mei Shi, Zhiguo Zhou, Fuyou Li, Chunhui Huang, Cationic Iridium(III) Complexes with Tunable Emission Color as Phosphorescent Dyes for Live Cell Imaging. Organometallics, 2010, 29, 1085-1091.6. Liqin Xiong, Qiang Zhao, Huili Chen, Yanbo Wu, Zesheng Dong, Zhiguo Zhou, Fuyou Li. Phosphorescence Imaging of Homocysteine and Cysteine in Living Cells Based on a Cationic Iridium(III) Complex. Inorganic Chemistry, 2010, 49, 6402–6408.7. Qiang Zhao, Fuyou Li, Shujuan Liu, Mengxiao Yu, Zhiqiang Liu, Tao Yi, Chunhui Huang. Highly Selective Phosphorescent Chemosensor for Fluoride Based on an Iridium(III) Complex Containing Arylborane Units. Inorganic Chemistry, 2008, 47, 9256-9264.8. Qiang Zhao, Shujuan Liu, Fuyou Li, Tao Yi, Chunhui Huang. Multisignaling Detection of Hg2+ Based on a Phosphorescent Iridium(III) Complex. Dalton Transactions, 2008, 3836-3840.9. Mengxiao Yu, Qiang Zhao, Linxi Shi, Fuyou Li, Zhiguo Zhou, Hong Yang, Tao Yi, Chunhui Huang. Cationic Iridium(III) Complexes for Phosphorescence Staining in the Cytoplasm of Living Cells. Chemical Communications, 2008, 2115-2117.10. Qiang Zhao, Tianye Cao, Fuyou Li, Xianghong Li, Hao Jing, Tao Yi, Chunhui Huang. A Highly Selective and Multisignaling Optical-Electrochemical Sensor for Hg2+ Based on a Phosphorescent Iridium(III) Complex. Organometallics, 2007, 26, 2077-2081.11. Qiang Zhao, Shujuan Liu, Mei Shi, Fuyou Li, Hao Jing, Tao Yi, Chunhui Huang. Tuning Photophysical and Electrochemical Properties of Cationic Iridium(III) Complex Salts with Imidazolyl Substituents by Proton and Anions. Organometallics, 2007, 26, 5922-5930.12. Huili Chen, Qiang Zhao, Yanbo Wu, Fuyou Li, Hong Yang, Tao Yi, Chunhui Huang. Selective Phosphorescence Chemosensor for Homocysteine Based on an Iridium(III) Complex. Inorganic Chemistry, 2007, 46, 11075-11081.

102 评论

相关问答

  • 光电材料与器件研究进展论文

    光学市场正处在蓬勃发展期,不论是视频图像、网上游戏、传统传输网亦或是数据中心,背后都离不开光学传输的支持。据MACOM的介绍:在光学应用上,传统光学应用分为5大

    沐小宁橙紫儿 4人参与回答 2023-12-09
  • 电子器件杂志社

    你到《无线电》上发不行吗?或《电子报》。

    今夕访古 3人参与回答 2023-12-05
  • 光伏电站逆变器毕业论文

    逆变器就是直流电变成交流电(DC→AC)!光伏产业的的逆变器就是把太阳能电池产生的直流电转换成交流电,然后通过升压变压器把电压、频率、相位按要求调整,并达到现在

    Bulabula789 5人参与回答 2023-12-07
  • 电子器件方向期刊

    N无线电电子学、电信技术类核心期刊表1、电子学报 2、半导体学报 3、通信学报 4、电波科学学报 5、北京邮电大学学报 6、光电子

    黑白无距离 4人参与回答 2023-12-11
  • 红外光电计数器毕业论文

    北京鑫安智能家居光电计数自动控制系统介绍 鑫安智能光电计数控制系统采用世界最先进的光电探测和转换技术,采用日本OMRON光电探测元件将人体信号转换为数字信

    柴米油盐的爱 3人参与回答 2023-12-05