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公开(公告)号：US12195348B2
公开(公告)日：2025-01-14
申请号：US17272960
申请日：2019-09-05
Inventor： Bin Xin , Iman Roqan , Yuhai Zhang , Somak Mitra , Yusin Pak
IPC: H01L31/032 , C01G21/00 , H01L31/0352 , H01L31/18
Abstract: A method for forming CsPbBr3 perovskite nanocrystals into a two-dimensional (2D) nanosheet includes providing CsPbBr3 perovskite nanocrystals; mixing the CsPbBr3 perovskite nanocrystals into a mixture of a first solvent and a second solvent, to form a solution of the CsPbBr3 perovskite nanocrystals, the first solvent, and the second solvent; and forming an optoelectronic device by patterning the CsPbBr3 perovskite nanocrystals into a nanosheet, between first and second electrodes. The first solvent is selected to evaporate before the second solvent.
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公开(公告)号：US11208333B2
公开(公告)日：2021-12-28
申请号：US15506415
申请日：2015-08-20
Inventor： Iman Roqan , Tahani Hassan Flemban
Abstract: Metal oxide nanostructure and methods of making metal oxide nanostructures are provided. The metal oxide nanostructures can be 1-dimensional nanostructures such as nanowires, nanofibers, or nanotubes. The metal oxide nanostructures can be doped or un-doped metal oxides. The metal oxide nanostructures can be deposited onto a variety of substrates. The deposition can be performed without high pressures and without the need for seed catalysts on the substrate. The deposition can be performed by laser ablation of a target including a metal oxide and, optionally, a dopant. In some embodiments zinc oxide nanostructures are deposited onto a substrate by pulsed laser deposition of a zinc oxide target using an excimer laser emitting UV radiation. The zinc oxide nanostructure can be doped with a rare earth metal such as gadolinium. The metal oxide nanostructures can be used in many devices including light-emitting diodes and solar cells.
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