Composite material, preparation method of composite material, light-emitting device and preparation method of light-emitting device

The invention discloses a composite material and a preparation method thereof, and a luminescent device and a preparation method thereof. The composite material comprises nanoparticles, a temperature-responsive polymer and a solvent, the temperature-responsive polymer has a first gelation critical temperature, and when the temperature is lower than the first gelation critical temperature, the temperature-responsive polymer and the first solvent are crosslinked to form a network structure; according to the method, the nano particles are added into the composite material, so that the composite material is in a gel state, the nano particles are relatively fixed in the composite material in the gel state, the nano particles are prevented from moving and mutually aggregating, and the dispersity of the nano particles in the composite material is improved. 本申请公开了一种复合材料及其制备方法、发光器件及其制备方法。本申请的复合材料，包括纳米粒子、温度响应聚合物和溶剂，其中，所述温度响应聚合物具有第一凝胶化临界温度，当温度低于所述第一凝胶化临界温度时，所述温度响应聚合物与所述第一溶剂交联形成网络结构，以使所述复合材料形成凝胶态，从而使所述纳米粒子相对固定在凝胶态的所述复合材料