Novel ultra-stable and highly luminescent white light-emitting diodes from perovskite quantum dots—Polymer nanofibers through biaxial electrospinning | Zendy

Dai-Hua Jiang | Zendy; Yi-Hsuan Tsai | Zendy; Loganathan Veeramuthu | Zendy; FangCheng Liang | Zendy; Lung-Chin Chen | Zendy; Chun Che Lin | Zendy; Toshifumi Satoh | Zendy; ShihHuang Tung | Zendy; ChiChing Kuo | Zendy

Open Access

Novel ultra-stable and highly luminescent white light-emitting diodes from perovskite quantum dots—Polymer nanofibers through biaxial electrospinning

Author(s) -

Dai-Hua Jiang,

Yi-Hsuan Tsai,

Loganathan Veeramuthu,

FangCheng Liang,

Lung-Chin Chen,

Chun Che Lin,

Toshifumi Satoh,

ShihHuang Tung,

ChiChing Kuo

Publication year - 2019

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.5124880

Subject(s) - materials science , perovskite (structure) , electrospinning , nanofiber , photoluminescence , luminescence , quantum dot , thermal stability , quantum yield , polymer , polystyrene , light emitting diode , chemical engineering , optoelectronics , composite material , optics , fluorescence , physics , engineering

Cesium lead halide perovskite quantum dots (QDs) have drawn extensive attention due to their excellent optical properties. However, their use is limited by poor stability. To enhance their stability, we electrospun perovskite-embedded fibers from composite CsPbX3 (X = Cl, Br, and I) perovskite QDs, blending with three polymers, poly(styrene-butadiene-styrene) (SBS), poly(methyl methacrylate) (PMMA), or polystyrene (PS), for the light-emitting diode (LED) applications. We found that the stretchable CsPbBr3@SBS fibers revealed the highest photoluminescence quantum yield, the CsPbBr3@PMMA fibers demonstrated a high thermal stability, and the CsPbBr3@PS fibers exhibited the best water-resistant stability. The photoluminescence intensity maintained 83% of its initial intensity for more than 3 months in water. Furthermore, the LED devices are manufactured from the blue chips and packaged with the core/shell red and green perovskite-based fibers by using biaxial electrospinning exhibited stable and highly efficient white luminescence. The luminance and efficiency are higher than 400% of the values of multilayered structures.

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