Great attention has recently been drawn to developing cost-effective,high efficiency solar cells to meet the ever increasing demand for clean energy.We have most recently witnessed a breakthrough and a rapid developme...Great attention has recently been drawn to developing cost-effective,high efficiency solar cells to meet the ever increasing demand for clean energy.We have most recently witnessed a breakthrough and a rapid development in solid state,hybrid solar cells using organolead halide perovskites as light harvesters.These semiconductors can not only serve as sensitizer in solid state sensitized solar cells with efficiency up to unprecedented 15%,but also function as both light absorber and hole conductor(or electron conductor)at the same time to display power conversion efficiency above 10%.In this review,we will introduce their operation mechanism,structure,and especially the development of the organolead halide perovskite based solar cells.Based on the achievements that have been made to date,solid state photovoltaic device with superior performance than the present one is highly expected.展开更多
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
基金supported by the‘‘Hun-dred Talents Program’’from the Chinese Academy of Sciences
文摘Great attention has recently been drawn to developing cost-effective,high efficiency solar cells to meet the ever increasing demand for clean energy.We have most recently witnessed a breakthrough and a rapid development in solid state,hybrid solar cells using organolead halide perovskites as light harvesters.These semiconductors can not only serve as sensitizer in solid state sensitized solar cells with efficiency up to unprecedented 15%,but also function as both light absorber and hole conductor(or electron conductor)at the same time to display power conversion efficiency above 10%.In this review,we will introduce their operation mechanism,structure,and especially the development of the organolead halide perovskite based solar cells.Based on the achievements that have been made to date,solid state photovoltaic device with superior performance than the present one is highly expected.
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.
