zro2基复合薄膜的制备及其对OLED效率和色彩稳定性的影响

IF 3.6 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-09-23 DOI:10.1016/j.jlumin.2025.121566

Bo-Yen Lin , Hsin-I Chen , Su-Hua Chen , Mao-Kuo Wei

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引用次数: 0

摘要

本研究展示了一种具有成本效益的制造zro2 -树脂复合薄膜作为有机发光器件（oled）外部光提取层的策略。系统地研究了薄膜组成和自旋镀膜速率对光学性能的影响。所得薄膜的雾度值超过80%，具有较强的光散射性能。当应用于白色oled时，ZrO2薄膜增强了器件性能。随着薄膜ZrO2平面密度的增加，OLED效率上升到峰值，随后下降。当平面密度约为2112个粒子/ μ m2时，器件效率提高21.5%。此外，复合薄膜中较高的ZrO2平面密度增强了角度颜色稳定性，在宽视角（0°-60°）下减少了CIE颜色坐标的变化证明了这一点，从而有效地抑制了oled的角度色移。这些结果强调了复合薄膜的纳米颗粒平面密度与器件性能之间的紧密相关性，强调了精确的颗粒含量控制在优化光提取和实现用于先进显示和照明应用的颜色稳定、高效的oled中的重要性。

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Facile preparation of ZrO2-based composite films and their impact on OLED efficiency and color stability

This study demonstrated a cost-effective strategy for fabricating ZrO₂–resin composite films as external light extraction layers for organic light-emitting devices (OLEDs). A systematic investigation was conducted to evaluate the influence of film composition and spin-coating rate on optical performance. The resulting films exhibited haze values exceeding 80 %, indicating strong light-scattering properties. When applied to white OLEDs, the ZrO₂ films enhanced device performance. As the ZrO₂ planar density of film increased, the OLED efficiency rose to a peak value, followed by a subsequent decline. A maximum device efficiency enhancement of 21.5 % was achieved at planar density of approximately 2112 particles/

μ

m². Furthermore, a higher ZrO₂ planar density in the composite films was found to enhance angular color stability, as evidenced by reduced variation in CIE color coordinates over a wide viewing angle (0°–60°), thereby effectively suppressing the angular color shift of the OLEDs. These results underscored a strong correlation between nanoparticle planar density of composite film and device performance, emphasizing the importance of precise particle content control in optimizing light extraction and achieving color-stable, high-efficiency OLEDs for advanced display and lighting applications.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.