Metal halide perovskites have gained a lot of attention in the field of solar cells and light-emitting diodes because of their excellent optoelectronic properties and simple scalable processability[1-3].The exceptiona...Metal halide perovskites have gained a lot of attention in the field of solar cells and light-emitting diodes because of their excellent optoelectronic properties and simple scalable processability[1-3].The exceptional structural tunability enables perovskites to possess low-dimensional form at the atomic level,offering advantages such as suppressed ion migrations and improved stability[4].Solar cells with power conversion efficiency over 19%have already been reported using quasi-two-dimensional(quasi-2D)Ruddlesden-Popper perovskites[5].Alternatively,2D perovskites could be used in field-effect transistors(FETs),which require horizontal charge transport,therefore avoiding the limitations of weak vertical charge transport in 2D perovskites while still maintaining the advantages such as suppressed ion migration and high intrinsic carrier mobility[6-8].展开更多
基金National Natural Science Foundation of China(11974063 and 61574024)Defense Industrial Technology Development Program(JCKY2017110C0654)+4 种基金the Fundamental Research Funds for the Central Universities(2019CDJGFGD001)Chongqing Special Postdoctoral Science Foundation(cstc2019jcyj-bsh0026 and cstc2020jcyj-bshX0123)for financial supportNational Key Research and Development Program of China(2017YFA0206600)the National Natural Science Foundation of China(51773045,21772030,5192203221961160720)for financial support。
文摘Metal halide perovskites have gained a lot of attention in the field of solar cells and light-emitting diodes because of their excellent optoelectronic properties and simple scalable processability[1-3].The exceptional structural tunability enables perovskites to possess low-dimensional form at the atomic level,offering advantages such as suppressed ion migrations and improved stability[4].Solar cells with power conversion efficiency over 19%have already been reported using quasi-two-dimensional(quasi-2D)Ruddlesden-Popper perovskites[5].Alternatively,2D perovskites could be used in field-effect transistors(FETs),which require horizontal charge transport,therefore avoiding the limitations of weak vertical charge transport in 2D perovskites while still maintaining the advantages such as suppressed ion migration and high intrinsic carrier mobility[6-8].
