Mingxing Meng, Yaqian Yuan, Jay Guoxu Liu, Chong Geng and Shu Xu*,
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Phosphor-Converted LEDs Based on CdSe/CdS Quantum Rod–BN Nanoplate Assembly
CdSe/CdS quantum rods (QRs) are excellent photoluminescent nanomaterials for display applications owing to their large Stokes shift and narrow emission line width. However, integrating QRs into phosphor-converted light-emitting diodes (Pc-LEDs) poses challenges due to their significant fluorescent quenching and long-term instability. Here, we developed a nanocomposite structure to enhance the efficiency and stability of QRs by embedding them in a layer-by-layer assembled BN nanoplate via SiO2 cross-linking. The two-dimensional SiO2/BN assembly structure facilitates effective scattering to blue light, which improves the light absorption and minimizes the required amount of QRs to suppress light reabsorption. Furthermore, the BN nanoplates provide effective heat conduction to reduce thermal-induced fluorescence quenching of QRs in Pc-LEDs. The CdSe/CdS/SiO2/BN assembly structure (QRBNs)-based Pc-LEDs demonstrate significantly improved efficiency and long-term stability.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.