收藏本站
收藏 | 手机打开
二维码
手机客户端打开本文

Observation of Internal Photoinduced Electron and Hole Separation in Hybrid 2-Dimentional Perovskite Films

刘俊学  Jing Leng  Jun Zhang  Shengye Jin  
【摘要】:Two-dimensional(2 D) organolead halide perovskites have recently emerged as an attractive material for applications in photovoltaics and other optoelectronic devices. The structural formula of the 2 D perovskite is generally given as(A)_2(CH_3NH_3)_(n-1)M_nX_(3n+1), where A is a large aliphatic or aromatic alkylammonium cation working as an insulating layer, M is the metal cation, and X is the halide anion. Recent reports have demonstrated that the 2 D multi-layered perovskite films actually comprised multiple perovskite phases(with various n values from 1, 2, 3 and 4 to near ∞), even though the films were intended to be prepared as a single-phase. This hybrid feature seems to be ineluctable in fabricating 2 D films. However, two important questions remain yet-to-be-answered: first, how the different perovskite phases align in the hybrid films; second, whether the band alignment between different phases induces energy funneling or instead charge separation. The latter is especially important because it dictates the application of these hybrid 2 D perovskite films: energy funneling is useful for light-emitting applications, whereas charge separation would be more beneficial for light conversion or detection. Here we report a unique spontaneous charge(electron/hole) separation property in multi-layered 2 D perovskite films by studying the charge carrier dynamics using ultrafast transient absorption and photoluminescence spectroscopy. We find that indeed multiple perovskite phases with various n values co-existed in the 2 D perovskite films, and more interestingly, these perovskite phases were naturally aligned in the order of n along the growth direction perpendicular to the substrate. Driven by the built-in band alignment between different perovskite phases, consecutive internal electron transfer from small-n to large-n perovskite phases and hole transfer in the opposite direction were observed in a film of ~358 nm thickness. This unique self-charge-separation property of the 2 D perovskite films can facilitate their applications in photovoltaics and other optoelectronics devices.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 Jinwen Hu;Chunyi Zhao;Sheng He;Wenming Tian;Ce Hao;Shengye Jin;;Carrier dynamics in CsPbI_3 perovskite microcrystals synthesized in solution phase[J];Chinese Chemical Letters;2018年05期
2 杜会静;王韦超;朱键卓;;Device simulation of lead-free CH_3NH_3SnI_3 perovskite solar cells with high efficiency[J];Chinese Physics B;2016年10期
3 顾帅;朱鹏臣;林仁兴;唐明瑶;祝世宁;朱嘉;;Thermal-stable mixed-cation lead halide perovskite solar cells[J];Chinese Optics Letters;2017年09期
4 Fengjun Ye;Wenqiang Yang;Deying Luo;Rui Zhu;Qihuang Gong;;Applications of cesium in the perovskite solar cells[J];Journal of Semiconductors;2017年01期
5 ;Synthesis of (1-x)Pb[(Mg,Zn)_(1/3)Nb_(2/3)] O_3-PbTiO_3 DielectricCeramic Powder by a Coprecipitation Process[J];Journal of University of Science and Technology Beijing(English Edition);1997年02期
6 李丽;张密林;袁福龙;史克英;张国;张丹;;Direct decomposition of nitric oxide in low temperature over iron-based perovskite-type catalyst modified by Ru[J];Journal of Harbin Institute of Technology;2006年05期
7 Yong Wang;Taiyang Zhang;Ge Li;Feng Xu;Tian Wang;Yihui Li;Yang Yang;Yixin Zhao;;A mixed-cation lead iodide MA_(1-x)EA_xPbI_3 absorber for perovskite solar cells[J];Journal of Energy Chemistry;2018年01期
8 Dong Liu;Wenjia Zhou;Haoying Tang;Pengfei Fu;Zhijun Ning;;Supersaturation controlled growth of MAFAPbI_3 perovskite film for high efficiency solar cells[J];Science China(Chemistry);2018年10期
9 韦慧;汤洋;冯波;尤晖;;Importance of PbI_2 morphology in two-step deposition of CH_3NH_3PbI_3 for high-performance perovskite solar cells[J];Chinese Physics B;2017年12期
10 Sajid;A M Elseman;纪军;窦尚轶;黄浩;崔鹏;卫东;李美成;;Novel hole transport layer of nickel oxide composite with carbon for high-performance perovskite solar cells[J];Chinese Physics B;2018年01期
11 许伟康;陈凤翔;曹功辉;王嘉绮;汪礼胜;;Factors influencing the performance of paintable carbon-based perovskite solar cells fabricated in ambient air[J];Chinese Physics B;2018年03期
12 Gong-Ping Mao;Wei Wang;Sen Shao;Xiao-Jun Sun;Shi-An Chen;Min-Hao Li;Hua-Ming Li;;Research progress in electron transport layer in perovskite solar cells[J];Rare Metals;2018年02期
13 Pengyang Wang;Qi Jiang;Yang Zhao;Yong Chen;Zema Chu;Xingwang Zhang;Yuqin Zhou;Jingbi You;;Synergistic improvement of perovskite film quality for efficient solar cells via multiple chloride salt additives[J];Science Bulletin;2018年11期
14 Bei Wang;Bo Li;Ting Shen;Mengjie Li;Jianjun Tian;;ZnSe quantum dots downshifting layer for perovskite solar cells[J];Journal of Energy Chemistry;2018年03期
15 Chandni Devi;Rajesh Mehra;;Deep insights into the advancements and applications of perovskite based photovoltaic cells[J];Journal of Energy Chemistry;2018年03期
16 Piaojie Xue;Heng Wu;Yao Lu;Xinhua Zhu;;Recent progress in molten salt synthesis of low-dimensional perovskite oxide nanostructures, structural characterization,properties, and functional applications: A review[J];Journal of Materials Science & Technology;2018年06期
17 Yinhua Lv;Bing Cai;Yihui Wu;Shubo Wang;Qike Jiang;Qingshan Ma;Jingyue (Jimmy) Liu;Wen-Hua Zhang;;High performance perovskite solar cells using TiO_2 nanospindles as ultrathin mesoporous layer[J];Journal of Energy Chemistry;2018年04期
18 Lingfeng Chao;Ze Wang;Yingdong Xia;Yonghua Chen;Wei Huang;;Recent progress on low dimensional perovskite solar cells[J];Journal of Energy Chemistry;2018年04期
19 Keke Huang;;An emerging platform for electrocatalysis: perovskite exsolution[J];Science Bulletin;2016年23期
20 ;High efficiency Pb-In binary metal perovskite solar cells[J];Science Foundation in China;2016年04期
中国重要会议论文全文数据库 前10条
1 刘俊学;Jing Leng;Jun Zhang;Shengye Jin;;Observation of Internal Photoinduced Electron and Hole Separation in Hybrid 2-Dimentional Perovskite Films[A];第十五届全国化学动力学会议论文集[C];2017年
2 Guojia Fang;;Performance enhancement of perovskite solar cells with SnO_2 quantum dot and PbS as interfacial transport layers[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
3 Na Liu;Qin Du;Guangzhong Yin;Pengfei Liu;Liang Li;Haipeng Xie;Cheng Zhu;Yujing Li;Huanping Zhou;Wen-Bin Zhang;Qi Chen;;Extremely low trap-state energy level perovskite solar cells passivated using NH2-POSS with improved efficiency and stability[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
4 Chenglin Gao;Xichang Bao;Renqiang Yang;;Efficient inverted planar perovskite solar cells with high fill factor[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
5 Yihe Miao;Morteza Eslamian;;Improving the stability and performance of Sn-based perovskite solar cells by ultrasonic substrate vibration post treatment[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
6 Chunjun Liang;Huimin Zhang;Xuejian Wan;;CH_3NH_3I post-treatment improves the performance of perovskite solar cells via eliminating the impure phases[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
7 Xia Tao;Yan-Zhen Zheng;Zhijie Zhao;Zhili Ye;Nan Li;Xuemei Dong;;High crystallization of a multiple cation perovskite absorber for low-temperature stable ZnO solar cells with high-efficiency of over 20%[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
8 Xi-Tao Li;He-Chuan Zhang;Xin-Ding Lv;Yan-Zhen Zheng;Xia Tao;;Iodine-doped ZnO nanopillar arrays for perovskite solar cells with high efficiency up to 18.24%[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
9 Chao Ji;Yuxin Cai;Xuejian Wan;Chunjun Liang;;Efficient preparation of perovskite solar devices as well as the improvement of fill factor[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
10 Man Yu;Hao-Yi Wang;Jia-Shang Zhao;Yujun Qin;Li-Min Fu;Jian-Ping Zhang;Xi-Cheng Ai;;Power output and carrier dynamics studies of perovskite solar cells under working conditions[A];第五届新型太阳能电池学术研讨会摘要集(钙钛矿太阳能电池篇)[C];2018年
中国博士学位论文全文数据库 前2条
1 Ahmed Saeed Ahmed Abdalla;[D];西南大学;2007年
2 魏一;[D];华东师范大学;2012年
中国硕士学位论文全文数据库 前3条
1 肖娟;有机-无机杂化钙钛矿材料的制备及在光伏电池和光检测器中的应用[D];兰州大学;2016年
2 董晴晴;用聚合物添加剂调节钙钛矿薄膜的结晶以制备高效钙钛矿太阳能电池[D];苏州大学;2016年
3 JOSEPH MICHEL MBENGUE(约瑟夫);n型掺杂钙钛矿太阳电池的模拟和实验研究[D];华北电力大学(北京);2017年
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978