研究了利用太赫兹时间分辨系统研究有机卤化物钙钛矿薄膜(CH_3NH_3PbI_3 and CH_3NH_3PbI_(3-x)Cl_x)的皮秒尺度的超快太赫兹调制特性.在光激发作用下出现了太赫兹透射波的瞬时下降.相比于CH_3NH_3PbI_3薄膜,在光激发作用下CH_3NH_3PbI_...研究了利用太赫兹时间分辨系统研究有机卤化物钙钛矿薄膜(CH_3NH_3PbI_3 and CH_3NH_3PbI_(3-x)Cl_x)的皮秒尺度的超快太赫兹调制特性.在光激发作用下出现了太赫兹透射波的瞬时下降.相比于CH_3NH_3PbI_3薄膜,在光激发作用下CH_3NH_3PbI_(3-x)Cl_x薄膜展现了更高的调制深度(10%).通过测算材料的电导率及载流子浓度,其调制机理为瞬态光激发载流子浓度上升.实验结果表明,CH_3NH_3PbI_(3-x)Cl_x薄膜可作为一种高效超快太赫兹调制器件.展开更多
Since the year of 2009 when the first appli- cation of organohalide lead perovskite as the light har- vester in solar cells was reported, tremendous attention has been devoted to these new types of perovskite-based so...Since the year of 2009 when the first appli- cation of organohalide lead perovskite as the light har- vester in solar cells was reported, tremendous attention has been devoted to these new types of perovskite-based solid-state solar cells and remarkable power conversion efficiency of over 20 % has been achieved to date. In this review, we first introduce the properties of organic- inorganic halide perovskites and then focus on the notable achievements made on the perovskite layer to improve the power conversion efficiency of solid-state perovskite solar cells, which is featured by process engineering of the state-of-the-art lead methylammoni- um triiodide perovskite and material control of lead triiodide perovskites and other newly emerged per- ovskites. In the end, we wish to provide an outlook of the future development in solid-state perovskite solar cells. Provided that the instability and toxicity of solid- state perovskite solar cells can be solved, we will wit- ness a new era for cost-effective and efficient solar cells.展开更多
基金Supported by the National Natural Science Foundation of China(61505125)
文摘研究了利用太赫兹时间分辨系统研究有机卤化物钙钛矿薄膜(CH_3NH_3PbI_3 and CH_3NH_3PbI_(3-x)Cl_x)的皮秒尺度的超快太赫兹调制特性.在光激发作用下出现了太赫兹透射波的瞬时下降.相比于CH_3NH_3PbI_3薄膜,在光激发作用下CH_3NH_3PbI_(3-x)Cl_x薄膜展现了更高的调制深度(10%).通过测算材料的电导率及载流子浓度,其调制机理为瞬态光激发载流子浓度上升.实验结果表明,CH_3NH_3PbI_(3-x)Cl_x薄膜可作为一种高效超快太赫兹调制器件.
基金supported by the Australian Research Council (ARC) through Discovery Project programs
文摘Since the year of 2009 when the first appli- cation of organohalide lead perovskite as the light har- vester in solar cells was reported, tremendous attention has been devoted to these new types of perovskite-based solid-state solar cells and remarkable power conversion efficiency of over 20 % has been achieved to date. In this review, we first introduce the properties of organic- inorganic halide perovskites and then focus on the notable achievements made on the perovskite layer to improve the power conversion efficiency of solid-state perovskite solar cells, which is featured by process engineering of the state-of-the-art lead methylammoni- um triiodide perovskite and material control of lead triiodide perovskites and other newly emerged per- ovskites. In the end, we wish to provide an outlook of the future development in solid-state perovskite solar cells. Provided that the instability and toxicity of solid- state perovskite solar cells can be solved, we will wit- ness a new era for cost-effective and efficient solar cells.
