Provided are a composition including particles having a refractive index of 2.0 or more and an average primary particle diameter of 200 nm or less, a film-forming component including at least one selected from a resin or a polymerizable monomer, and a solvent, in which the film-forming component includes two or more kinds of resins, or includes one or more kinds of resins and one or more kinds of polymerizable monomers, and in a case where a film having a thickness of 4 µm is formed by heating the composition at 200°C for 5 minutes, a maximum value of a light transmittance of the film in a wavelength range of 400 to 1000 nm is 80% or less, and a phase-separated structure between a first phase including the particles and a second phase with a lower content of the particles than the first phase is formed in the film; a film formed of the composition; and an optical sensor.
提供了一种组合物,其中包括折射率为 2.0或更高且平均主颗粒直径为200 nm或更小的颗粒、成膜组分(包括至少一种选自
树脂或可聚合单体的成膜组分)和溶剂,其中成膜组分包括两种或更多种
树脂,或包括一种或更多种
树脂和一种或更多种可聚合单体、在 200°C 下加热组合物 5 分钟,形成厚度为 4 µm 的薄膜的情况下,薄膜在 400 至 1000 nm 波长范围内的最大透光率为 80% 或更低,薄膜中形成包括颗粒的第一相和颗粒含量低于第一相的第二相之间的相分离结构;由该组合物形成的薄膜;以及光学传感器。