Ma Jeong Hun, Bark Chung Wung, Choi Hyung Wook
Department of Electrical Engineering, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, 13120, Republic of Korea.
J Nanosci Nanotechnol. 2019 Mar 1;19(3):1615-1619. doi: 10.1166/jnn.2019.16173.
In this work, to explore the influence of phosphor additives on the conversion efficiency of perovskite solar cells (PSC), we introduce a Y₃AlO:Ce (YAG:Ce) phosphor layer. The YAG:Ce nanophosphor acts as a light down-converting material to absorb high energy photons and emit lower energy photons that match well with the absorption of the perovskite layer, yielding more excited photo-generated electron-hole pairs. Therefore, the incident solar light can be harvested more effectively. We used 8 mg/ml of TiO₂ mixed with YAG:Ce in the PSCs and realized a light-to-electric energy conversion efficiency of 13.34%, a short circuit current density of 21.23 mA/cm², an open circuit voltage of 0.97 V, and a FF of 55.96%. Higher efficiencies were achieved for PSCs with phosphor-mixed TiO₂ than for cells with pure TiO₂ nanoparticles. The samples were characterized by XRD, SEM, UV-vis, PL, and IV-curves. Photoelectrode DSSC with light-to-electric energy conversion efficiency was achieved under a simulated solar light irradiation of 100 mW/cm² (AM 1.5).
在本工作中，为了探究磷光添加剂对钙钛矿太阳能电池（PSC）转换效率的影响，我们引入了Y₃AlO:Ce（YAG:Ce）磷光体层。YAG:Ce纳米磷光体作为一种光向下转换材料，吸收高能光子并发射与钙钛矿层吸收良好匹配的低能光子，产生更多激发的光生电子 - 空穴对。因此，可以更有效地收集入射太阳光。我们在PSC中使用了8 mg/ml的TiO₂与YAG:Ce混合，并实现了13.34%的光电能量转换效率、21.23 mA/cm²的短路电流密度、0.97 V的开路电压以及55.96%的填充因子。与纯TiO₂纳米颗粒的电池相比，含磷光体混合TiO₂的PSC实现了更高的效率。通过XRD、SEM、UV-vis、PL和IV曲线对样品进行了表征。在100 mW/cm²（AM 1.5）的模拟太阳光照射下，实现了具有光电能量转换效率的光电极DSSC。
