In this paper, a facile strategy for a hybrid photothermal structure that can efficiently manage solar heat is reported. The hybrid photothermal structure consists of a Cr/MgF₂ multilayer structure absorber and a poly(methyl methacrylate) (PMMA)-graphene heat reservoir that prevents the absorbed heat from being lost through radiation or convection. It exhibits a quite high light absorption of approximately 80% over a wavelength range of 0.5–2.5 µm. The thermal conductivity and thermal diffusivity are improved by about 47% according to the addition of graphene to PMMA, effectively transferring the stored heat to a place where it can be used efficiently. When the hybrid photothermal structure was applied to the hot zone of a thermoelectric generator, the output voltage is improved by 2.74 times compared to the device with only the light absorber. In addition, the difference between the high and low temperatures reached up to approximately 27 K.

在本文中，报告了一种可以有效管理太阳能热量的混合光热结构的简便策略。混合光热结构由 Cr/MgF ₂多层结构吸收器和聚（甲基丙烯酸甲酯）（PMMA）-石墨烯储热器，可防止吸收的热量通过辐射或对流散失。它在 0.5–2.5 µm 的波长范围内表现出大约 80% 的相当高的光吸收率。根据在PMMA中添加石墨烯，导热系数和热扩散系数提高了约47%，有效地将储存的热量转移到可以有效利用的地方。当将混合光热结构应用于热电发电机的热区时，与仅具有光吸收器的装置相比，输出电压提高了2.74倍。此外，高温和低温之间的差异高达约 27 K。