CsPbIBr_(2)钙钛矿太阳能电池的制备及光电性能研究

Study on preparation and photoelectric properties of CsPbIBr_(2) perovskite solar cells

通过改变二氧化钛浆料和无水乙醇的质量比(m_(18NRT)∶m_(Eth=)1∶4,1∶8,1∶10,1∶12),并调节钙钛矿薄膜的退火温度(160,190,220℃)探究钙钛矿太阳能电池最优制备条件.结果显示,当质量比为1∶10且钙钛矿薄膜退火温度为190℃时,薄膜晶粒大且致密,缺陷密度低,最终电池效率为5.43%,短路电流密度(J_(sc))为10.05 mA/cm^(2),开路电压(V_(oc))为1.14 V,填充因子(FF)为45.29%.

The optimal preparation conditions of perovskite solar cells were explored by changing the mass ratio of 18-NRT slurry to anhydrous ethanol(1∶4,1∶8,1∶10 and 1∶12)and adjusting the annealing temperature of the perovskite film(160℃,190℃and 220℃).The results show that when the mass ratio of 18-NRT slurry to anhydrous ethanol is 1∶10,and the annealing temperature of perovskite film is 190℃,the efficiency of CsPbIBr 2 is 5.43%,the short-circuit current density(J_(sc))is 10.05 mA/cm^(2),the open-circuit voltage(V_(oc))is 1.14 V,and the filling factor(FF)is 45.29%.This is because the grains size of the CsPbIBr2 film is large and dense,and the defect density is low.