Abstract A neoteric solar-thermal utilization and thermal storage microencapsulated phase change material (MPCM) material, RT60@silica (SiO2)/N719 (i.e. dye-doped MPCM), was prepared by in-situ polycondensation method including two steps: construction of O/W emulsion and dehydration polycondensation of TEOS with the participation of the N719 dye. The prepared composite material displayed a rapid visible-light-induced thermal conversion and solid-liquid phase transition promoted by the N719 dye which served as an effective visible-light photon capture additive enabling the direct and efficient use of solar radiation. The dye-doped MPCM slurry exhibits enhanced solar-thermal conversion performance, making it potential for use as the heat transfer fluid indirect absorption solar collectors. With high heat storage capability and excellent photothermal conversion performance, the prepared dye-doped MPCM composite is capable of developing its role in solar thermal energy storage applications.

中文翻译：

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制作可见光吸收染料掺杂相变微球以提高太阳能热利用性能

摘要 采用原位缩聚法制备了一种新型太阳能热利用和蓄热微胶囊相变材料（MPCM）材料 RT60@silica (SiO2)/N719（即染料掺杂 MPCM），包括两个步骤：O /W乳液和TEOS在N719染料参与下的脱水缩聚。制备的复合材料显示出由 N719 染料促进的快速可见光诱导的热转换和固液相变，该染料作为一种有效的可见光光子捕获添加剂，能够直接有效地利用太阳辐射。染料掺杂的 MPCM 浆料表现出增强的太阳能热转换性能，使其具有用作传热流体间接吸收太阳能集热器的潜力。