Abstract When sulforhodamine B (SRB) is entrapped in a tightly packed hybrid material composed of dodecylsulfate anions interleaved in layered double hydroxide, the organic dye is considered as a possible red-emitting phosphor for white light-emitting diodes (WLEDs). To confirm such promising potential, a reliability study is here undertaken and the materials and their associated silicone films are subjected to different thermal and photonic stresses. Optical properties, photoluminescence quantum yields and emission spectra are recorded after photo-aging studies. Interestingly, the composite silicone film is found to be completely stable under blue LED excitation, while in the absence of the hybrid LDH the emission of SRB decays rapidly, thus underlining the protective role of the LDH hybrid cargo. At this stage, these results confirm the potential offered by a system consisting of such an emitter film and a blue LED. This system also opens up new possibilities for interesting organic dyes that are sensitive to photonic and/or thermal stresses.

中文翻译：

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硫罗丹明 B (SRB) 限制在层状双氢氧化物 (LDH) 中的热和光子应力下的可靠性研究

摘要 当硫罗丹明 B (SRB) 被包裹在由十二烷基硫酸根阴离子交错在层状双氢氧化物组成的紧密堆积的杂化材料中时，有机染料被认为是一种可能用于白光发光二极管 (WLED) 的发红光磷光体。为了证实这种有前景的潜力，这里进行了可靠性研究，并且材料及其相关的有机硅薄膜会受到不同的热应力和光子应力。在光老化研究后记录光学特性、光致发光量子产率和发射光谱。有趣的是，复合有机硅薄膜在蓝光 LED 激发下是完全稳定的，而在没有混合 LDH 的情况下，SRB 的发射迅速衰减，从而强调了 LDH 混合货物的保护作用。在这个阶段，这些结果证实了由这种发射器薄膜和蓝色 LED 组成的系统所提供的潜力。该系统还为对光子和/或热应力敏感的有趣有机染料开辟了新的可能性。