基于多铜硫化物纳米晶体的无重金属白光二极管。

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-04-01 DOI:10.1364/OL.555369

Peiwen Lv, Kai Wang, Danxin Hou, Shengli Wu, Jintao Guan, Zhe Yin, Aiwei Tang

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引用次数: 0

摘要

量子点（QD）白光发光二极管（wled）一直致力于改善高色域显示和固态照明，但由于镉的毒性而面临审查。我们已经成功地通过无重金属的多铜硫族化物纳米晶体制造了具有93高显色指数的wled。该器件的最大亮度为1062 cd/m2，峰值外量子效率（EQE）为1.15%。值得注意的是，这些器件表现出最小的效率滚降，即使在较高的亮度水平（500 cd/m2）下也能保持1.09%的EQE值。这项研究提出了一种令人信服的制造wled的方法，并为潜在的应用提供了重大的希望。

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Heavy metal-free white light-emitting diodes based on multinary copper chalcogenide nanocrystals.

Quantum dot (QD) white light-emitting diodes (WLEDs) have been aimed at improving high-color gamut displays and solid-state lighting yet faced scrutiny due to the toxicity of Cd. We have successfully fabricated WLEDs with a high color rendering index of 93 via heavy metal-free multinary copper chalcogenide nanocrystals. The devices demonstrate a maximum luminance of 1062 cd/m² and a peak external quantum efficiency (EQE) value of 1.15%. Notably, these devices exhibit minimal efficiency roll-off, maintaining an EQE value of 1.09% even at elevated luminance levels (500 cd/m²). This investigation presents a compelling methodology for fabricating WLEDs and holds significant promise for potential applications.

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.