Hierarchical Chiral Self‐Assembly of Lead Halide Perovskite Nanocrystals by Oriented Phase Transition

Inorganic Lead Halide Perovskite Micro-/Nanostructures: From Self-Assembly to Applications

Synthesis and optical properties of CsCu₂Br₃–Cu⁰ nanoheterojunctions

During the synthesis of CsCu2Br3 quantum dots, the post-introduced Pb2+ is reduced by oleylamine to Pb0, which initiates the further reduction of Cu+ to Cu0, and the growth of Cu0 NPs finally leads to the formation of CsCu2Br3–Cu0 nanoheterojunctions.

Self‐Assembly of Perovskite CsPbBr ₃ Quantum Dots Driven by a Photo‐Induced Alkynyl Homocoupling Reaction

Efficient plasmon-hot electron conversion in Ag–CsPbBr3 hybrid nanocrystals

AbstractHybrid metal/semiconductor nano-heterostructures with strong exciton-plasmon coupling have been proposed for applications in hot carrier optoelectronic devices. However, the performance of devices based on this concept has been limited by the poor efficiency of plasmon-hot electron conversion at the metal/semiconductor interface. Here, we report that the efficiency of interfacial hot excitation transfer can be substantially improved in hybrid metal semiconductor nano-heterostructures consisting of perovskite semiconductors. In Ag–CsPbBr3 nanocrystals, both the plasmon-induced hot electron and the resonant energy transfer processes can occur on a time scale of less than 100 fs with quantum efficiencies of 50 ± 18% and 15 ± 5%, respectively. The markedly high efficiency of hot electron transfer observed here can be ascribed to the increased metal/semiconductor coupling compared with those in conventional systems. These findings suggest that hybrid architectures of metal and perovskite semiconductors may be excellent candidates to achieve highly efficient plasmon-induced hot carrier devices.

Plasmon-Induced Hot Electron Transfer in Ag-CsPbBr3 Hybrid Nanocrystals