Go beyond the limit: Rationally designed mixed-dimensional perovskite/semiconductor heterostructures and their applications

Two-Dimensional Layered Materials Meet Perovskite Oxides: A Combination for High-Performance Electronic Devices

“…The layer-by-layer stacking method should be advantageous to capacitance matching because the individual ferroelectric and dielectric layers can be optimized before integration. These strategies to integrate perovskite oxides could also be applied to other material families, such as the halide perovskites. , Unlike the usually insulating perovskite oxides, the halide perovskites are typical semiconductors with outstanding optoelectronic properties and have a great potential in solar cells, light-emitting diodes, and photodetectors. Integration of high-κ perovskite oxides with the halide perovskite may boost the performance of the halide perovskite electronics.…”

Blade-coating of a highly crystallized lead-free silver-bismuth halide double perovskite thin film with improved stability for high-performance photodetection

“…Metal halide perovskites with the chemical formula ABX 3 (A = organic ammonium cations, such as Cs + ; B = an inorganic cation, such as Pb 2+ or Sn 2+ ; X = Cl À , Br À , or I À ) have attracted significant attention owing to their excellent optical and electronic properties, including exceptional charge carrier mobilities and large absorption coefficients, along with large carrier lifetimes and diffusion lengths, which have resulted in extremely rapid progress in perovskite photodetectors. [1][2][3][4][5] However, current highperforming perovskites usually contain toxic Pb and have poor stability, which severely restricts their practical application. 6 Recently, lead-free halide double perovskites with the formula A 2 M + M 3+ X 6 , wherein two divalent Pb 2+ ions are replaced by one monovalent metal cation (M + = Na + , K + , or Ag + ) and one trivalent metal cation (M 3+ = Bi 3+ , Sb 3+ , or In 3+ ), have emerged as promising candidates for solving the abovementioned toxicity and stability issues.…”

“…Metal halide perovskites with the chemical formula ABX 3 (A = organic ammonium cations, such as Cs + ; B = an inorganic cation, such as Pb 2+ or Sn 2+ ; X = Cl − , Br − , or I − ) have attracted significant attention owing to their excellent optical and electronic properties, including exceptional charge carrier mobilities and large absorption coefficients, along with large carrier lifetimes and diffusion lengths, which have resulted in extremely rapid progress in perovskite photodetectors. 1–5 However, current high-performing perovskites usually contain toxic Pb and have poor stability, which severely restricts their practical application. 6…”

Femtosecond Laser-Processed Perovskite Thin Films with Reduced Nonradiative Recombination and Improved Photodetecting Performance

“…In the past decade, perovskites have been increasingly studied since Kojima et al first used all-organic perovskites to fabricate solar cells and achieved a power conversion efficiency (PCE) of 3.81% . So far, various perovskites have been used to fabricate various optoelectronic devices, such as solar cells, photodetectors, light-emitting diodes (LED), lasers, and phototransistors, due to their excellent photoelectric properties. − To enhance the performance of the devices, one key challenge is to reduce nonradiative recombination caused by surface and grain boundary defects . One of the promising approaches is to passivate the surface defects of perovskite thin films with chemicals, − such as organic small molecules, polymers, inorganic molecules, etc.…”