Department of Information Display and Advanced Display Research Center, Kyung Hee University, Dongdaemun-ku, Seoul 130-171, Republic of Korea.
Nanoscale Res Lett. 2014 Jun 27;9(1):323. doi: 10.1186/1556-276X-9-323. eCollection 2014.
We demonstrate a new solution-processed electron transport layer (ETL), zinc oxide doped with cesium carbonate (ZnO:Cs2CO3), for achieving organic photovoltaics (OPVs) with good operational stability at ambient air. An OPV employing the ZnO:Cs2CO3 ETL exhibits a fill factor of 62%, an open circuit voltage of 0.90 V, and a short circuit current density of -6.14 mA/cm(2) along with 3.43% power conversion efficiency. The device demonstrated air stability for a period over 4 weeks. In addition, we also studied the device structure dependence on the performance of organic photovoltaics. Thus, we conclude that ZnO:Cs2CO3 ETL could be employed in a suitable architecture to achieve high-performance OPV.
我们展示了一种新的溶液处理电子传输层(ETL),即掺碳酸铯的氧化锌(ZnO:Cs2CO3),用于在环境空气中实现具有良好工作稳定性的有机光伏(OPV)。采用 ZnO:Cs2CO3 ETL 的 OPV 表现出 62%的填充因子、0.90 V 的开路电压和-6.14 mA/cm2 的短路电流密度,以及 3.43%的功率转换效率。该器件在超过 4 周的时间内表现出空气稳定性。此外,我们还研究了器件结构对有机光伏性能的依赖性。因此,我们得出结论,ZnO:Cs2CO3 ETL 可以在合适的结构中使用,以实现高性能的 OPV。