Zirconia/phenylsiloxane nano-composite for LED encapsulation with high and stable light extraction efficiency

Lü, Ying; Zhao, Zhihang; Fan, Xianpeng; Cao, Xinyu; Ming, Hai; Yang, Zhou; Zheng, Kuo; Lu, Jiaxin; Zhang, Jingnan; Ma, Yingfei; Zhang, Rongben; Fang, Shifeng

doi:10.1039/d1ra02230j

RSC Adv.

2021

DOI: 10.1039/d1ra02230j

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Zirconia/phenylsiloxane nano-composite for LED encapsulation with high and stable light extraction efficiency

Ying Lü

Zhihang Zhao

Xianpeng Fan

et al.

Abstract: The double-layer encapsulation by a highly crystalline ZrO2/polydiphenylsiloxane composite affords 11.2% and 64.8% higher LEE respectively than that of OE-7662 before and after sulfur vapor erosion.

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Cited by 3 publications

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Preparation of ultraviolet‐cured silicone elastomer reinforced by SH‐POSS crosslinker for light emitting diode encapsulant

Zeng,

Xia

2024

J of Applied Polymer Sci

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Stable silicone encapsulants are essential for protecting high‐power light‐emitting diodes (LED) from dust and moisture and extending their service life. Herein, by incorporating thiol‐functionalized polyhedral oligomeric silsesquioxane (SH‐POSS) as a crosslinker into ultraviolet‐curable silicone elastomer (UVSE), a series of new UV‐cured silicone encapsulants (SH‐POSS/UVSE) have been developed through thiol‐ene click chemistry. It was found that SH‐POSS effectively enhanced the mechanical properties of SH‐POSS/UVSE. When 30 mol% SH‐POSS was added, the tensile strength and elongation at break reached 1.01 MPa and 422%, respectively, 2.1 and 1.6 times higher than pure UVSE. This could be ascribed to the more concentrated crosslinking network and the improved interfacial interactions between SH‐POSS and UVSE than physical blending. Moreover, the steric effect of branched and rigid SH‐POSS restricted the movement of UVSE molecular chains. Incorporating SH‐POSS also suppressed UVSE degradation and improved its thermal stability. Additionally, when the LED sample encapsulated by SH‐POSS/UVSE‐30 was immersed in boiling red ink for 2 h, no crack or stain was observed, indicating that SH‐POSS/UVSE‐30 possessed good adhesion to the LED lead frame. This work provides a new approach to fabricating high‐strength and stable silicone composites, which are promising candidates as LED encapsulants.

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Preparation of ultraviolet‐cured silicone elastomer reinforced by SH‐POSS crosslinker for light emitting diode encapsulant

Zeng,

Xia

2024

J of Applied Polymer Sci

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Zirconium Oxide Doped Organosilica Nanodots as Light‐ and Charge‐Management Cathode Interlayer for Highly Efficient and Stable Inverted Organic Solar Cells

Cui,

Rong,

Wang

et al. 2024

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In this work, it is reported that zirconium oxide (ZrO2) doped organosilica nanodots (OSiNDs: ZrO2) with light‐ and charge‐management properties serve as efficient cathode interlayers for high‐efficiency inverted organic solar cells (i‐OSCs). ZrO2 doping effectively improves the light harvesting of the active layer, the physical contact between the active layer, as well as the electron collection property by habiting charge recombination loss. Consequently, all devices utilizing the OSiNDs: ZrO2 cathode interlayer exhibit enhanced power conversion efficiency (PCE). Specifically, i‐OSCs based on PM6:Y6 and PM6:BTP‐eC9 achieve remarkable PCEs of 17.16% and 18.43%, respectively. Furthermore, the PCE of device based on PM6:Y6 maintains over 97.2% of its original value following AM 1.5G illumination (including UV light) at 100 mW cm−2 for 600 min.

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A transparent cyclo-linear polyphenylsiloxane elastomer integrating high refractive index, thermal stability and flexibility

et al. 2021

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Zirconia/phenylsiloxane nano-composite for LED encapsulation with high and stable light extraction efficiency

Abstract: The double-layer encapsulation by a highly crystalline ZrO2/polydiphenylsiloxane composite affords 11.2% and 64.8% higher LEE respectively than that of OE-7662 before and after sulfur vapor erosion.

Cited by 3 publications

References 50 publications

Preparation of ultraviolet‐cured silicone elastomer reinforced by SH‐POSS crosslinker for light emitting diode encapsulant

Preparation of ultraviolet‐cured silicone elastomer reinforced by SH‐POSS crosslinker for light emitting diode encapsulant

Zirconium Oxide Doped Organosilica Nanodots as Light‐ and Charge‐Management Cathode Interlayer for Highly Efficient and Stable Inverted Organic Solar Cells

A transparent cyclo-linear polyphenylsiloxane elastomer integrating high refractive index, thermal stability and flexibility

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