摘要
采用一步法制备平面结构的钙钛矿太阳能电池(Perovskite Solar Cells,PSCs)。采用旋涂法在SnO_(2)电子传输层(Electron Transport Layers,ETLs)和钙钛矿层之间插入漠化钠(NaBr)界面修饰层,主要研究了NaBr溶液的浓度对PSCs的影响,并探索了NaBr的对电池性能的影响机理。通过XRD、SEM、ATM、XPS、PL、UV-Vis及J-V等对样品的形貌、结构、吸光度及光电性能等参数进行系统研究。结果表明:NaBr能够增强钙钛矿的结晶性能和光吸收,增强SnO_(2)ETLs和钙钛矿层之间的界面结合,有效提升电池效率。当NaBr浓度为0.2mol/L时,器件的光电性能最佳,其光电转换效率(Photoelectric Conversion Efficiency,PCE)为16.21%,开路电压(Open-circuit Voltage,Voc)为1.07 V,短路电流密度(Short-circuit Current Density,Jsc)为20.22mA/cm^(2),填充因子(Fill Factor,FF)为75.13%。
In this study,a one-step method was used to prepare perovskite solar cells(PSCs)with planar structure.Sodium bromide(NaBr)was inserted in between the SnO_(2) electron transport layers(ETLs)and the perovskite layer as the interface modification layer by using spin coating.The effect of concentration of the NaBr solution on performance of the PSCs was studied,while the effect mechanism of NaBr was explored.With XRD,SEM,AFM,XPS,PL,UV-Vis and J-V,morphology,structure,absorbance and photoelectric properties of the samples were systematically studied.It is found that the modification of NaBr can improve the crystallization behavior and light absorption of the perovskite,enhance the interface bonding between the SnO_(2) ETLs and the perovskite layers and effectively improve the efficiency of PSCs.When the concentration of NaBr was 0.2 mol/L,the photoelectric performance of the device was optimized,with photoelectric conversion efficiency(PCE)of 16.21%,open-circuit voltage(VOc)of 1.07 V,short-circuit current density(Jsc)of 20.22 mA/cm^(2) and fill factor(FF)of 75.13%.
作者
骆鹏辉
江和栋
李家科
范学运
郭平春
黄丽群
孙健
朱华
王艳香
LUO Penghui;JIANG Hedong;LI Jiake;FAN Xueyun;GUO Pingchun;HUANG Liqun;SUN Jian;ZHU Hua;WANG Yanxiang(Jingdezhen Ceramic Institute,Jingdezhen 333403,Jiangxi,China)
出处
《陶瓷学报》
CAS
北大核心
2021年第2期271-278,共8页
Journal of Ceramics
基金
国家自然科学基金(61764007)
江西省重点研发计划(20192BBEL50032)
景德镇科技计划项目(20192GYZD008-36)。
