Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
ACS Appl Mater Interfaces. 2017 Jan 25;9(3):2403-2409. doi: 10.1021/acsami.6b13206. Epub 2017 Jan 12.
Novel organic-inorganic hybrid perovskite compounds composed of mixed A-site cation (Formamidinium and Cesium) and pseudohalides (SCN and I) ions are successfully synthesized. These new classes of hybrid perovskites photovoltaics exhibited remarkable power conversion efficiency of more than 16% with excellent stability against moisture in ambient environment and under low-light storage condition. The existence of SCN ion inclusion is confirmed by secondary ion mass spectrometry and Fourier transform infrared spectroscopy. The SCN-doped pseudohalide is advantageous for the formation of large perovskite grains, as well as the performance and stability of the device.
成功合成了由混合 A 位阳离子（甲脒和铯）和拟卤离子（SCN 和 I）组成的新型有机-无机杂化钙钛矿化合物。这些新型杂化钙钛矿光伏材料表现出超过 16%的显著功率转换效率，并且在环境湿度和低光照储存条件下具有优异的稳定性。通过二次离子质谱和傅里叶变换红外光谱证实了 SCN 离子的存在。SCN 掺杂的拟卤化物有利于形成大的钙钛矿晶粒，以及器件的性能和稳定性。
