Development of Ceramic Glaze with Specific Near-infrared Radiation by Doping of Rare-earth Elements for effective Thermophotovoltaic Generation of Electricity

在多晶氧化铝上涂覆含Er的陶瓷釉，以提高氧化铝在1.5左右波长的发射率。M，采用本研究提出的沉水底物法。在1273K的温度下，测量了包覆氧化铝的法向发射率的光谱分布，发现发射带的发射度约为1.5。M随膜厚和Er含量的增加而增大，然后接近最大值。此外，我们还成功地用刀片镀膜法镀制了厚度为0.05 mm的掺Er陶瓷釉。

Ceramic glaze contained erbium was coated on polycrystalline alumina to enhance emittance of the alumina in the wavelength around 1.5. m by means of submerged-substrate method proposed in this study. Spectral distribution of normal emittance of the coated alumina was measured under the condition of the temperature 1273 K. It was revealed that the emittance in the emissive band around 1.5. m increases with the film thickness and content of Er, and then, approaching to the almost maximum value. Furthermore, we succeeded in coating Er-doped ceramic glaze with thickness of 0.05 mm by means of blade coating method.