Meng Ruiqian, Feng Xiaoxia, Yang Yiwei, Lv Xudong, Cao Jing, Tang Yu
State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China.
ACS Appl Mater Interfaces. 2019 Apr 10;11(14):13273-13278. doi: 10.1021/acsami.9b01587. Epub 2019 Mar 26.
CeO has been widely used in optoelectronic devices due to its special electronic and optical structure. Herein, CeO was directly doped into ZnO to successfully construct a ZnO/CeO electron transport material (ETM) used in perovskite solar cells (PSCs). The incorporation of CeO can regulate the chemical compatibility between ZnO and perovskite, unmatched energy levels, and poor UV stability, further enhancing the cell performance and stability of PSCs. As expected, the best efficiency of fabricated CHNHPbI-PSCs based on ZnO/CeO as the ETM was up to 19.5%. In contrast, the efficiency of PSCs with pure ZnO was 16.0%. Moreover, compared with PSCs based on ZnO, ZnO/CeO -based PSCs exhibited significantly enhanced moisture, and thermal and UV stability. These results point to the introduction of rare-earth oxides, which could accelerate the industrialization of PSCs.
由于其特殊的电子和光学结构，CeO已被广泛应用于光电器件中。在此，将CeO直接掺杂到ZnO中，成功构建了一种用于钙钛矿太阳能电池（PSC）的ZnO/CeO电子传输材料（ETM）。CeO的掺入可以调节ZnO与钙钛矿之间的化学兼容性、不匹配的能级以及较差的紫外稳定性，进一步提高PSC的电池性能和稳定性。正如预期的那样，基于ZnO/CeO作为ETM制备的CHNHPbI-PSC的最佳效率高达19.5%。相比之下，使用纯ZnO的PSC效率为16.0%。此外，与基于ZnO的PSC相比，基于ZnO/CeO的PSC表现出显著增强的防潮性、热稳定性和紫外稳定性。这些结果表明，稀土氧化物的引入可以加速PSC的工业化进程。
