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Compact Pixel Architectures Enabled by Frequency‐Modulated Color‐Tunable AC‐Driven Electroluminescent Devicesстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Liu Yibin, Du Xuanhui, Liu Na, Sun Hang, Long Hui, Li Rui, Vasiliev Roman B., Chen Song, Chang Shuai
- Журнал: Advanced Optical Materials
- Год издания: 2025
- Номер статьи: e02689
- DOI: 10.1002/adom.202502689
- Аннотация: In this study, a non-carrier-injection quantum-dot based alternating current electroluminescent device based on a novel tandem emission layer architecture, enabling continuous color tunability for a single color of both emission layers and their mixed colors through a frequency modulation strategy is proposed. The key to the device operation lies in the introduction of a charge buffer layer between the emission layers, enabling precise regulation of charge transport between the top and bottom quantum dot layers. The device exhibits fully continuous and directionally controllable color-tuning capability, with a peak luminance of up to 1200 cdm−2 and excellent cycling stability. It is revealed that the capacitances of the top and bottom structures of the device are frequency dependent, which governs charge distribution and enables frequency-selective emission. Based on these findings, a full-color pixel is constructed using two coplanar sub-pixel units. By integrating a wavelength prediction model, continuously tunable full-color emission is precisely controlled through voltage/frequency modulation, achieving a color gamut close to the DCI-P3 standard. This strategy offers a compact device framework and technical pathway for ultra-high-resolution displays with reduced complexity and cost.
- Добавил в систему: Васильев Роман Борисович
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