Highly stable and flexible quantum dot/polyimide nanocomposite film for display applications

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-12-17 DOI:10.1016/j.dyepig.2024.112607

Seungho Baek, Ho Seok Heo, Seungmin Han, Kangtaek Lee

引用次数: 0

Abstract

We present the development of flexible quantum dot (QD)/hydrothermal polyimide (HPI) films with high stability and mechanical performance for display applications. This was achieved by acrylation of both the QDs and HPI, followed by UV curing, which effectively minimized QD aggregation in the films while preserving excellent fluorescence properties. Optimizing the QD content resulted in a quantum efficiency of 57.4 % and a color-conversion efficiency of 45.3 %. Mechanical tests demonstrated that the QD/HPI films exhibited exceptional durability, maintaining their fluorescence even after 10,000 cycles of bending, torsion, and folding. Furthermore, the films displayed excellent stability against heat and humidity, retaining their fluorescence after 30 days of exposure to high temperature and humidity (85 °C/85 % relative humidity). These films were successfully utilized as color conversion layers in the fabrication of flexible white light-emitting diode devices.

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.