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Micro-to-Nanometer Scale Patterning of Perovskite Inks via Controlled Self-Assemblies
Authors:Misun Kang  Dooho Choi  Jae Young Bae  Myunghwan Byun
Affiliation:1.Department of Advanced Materials Engineering, Keimyung University, Daegu 42601, Korea;2.Department of Chemistry, Keimyung University, Daegu 42601, Korea;3.School of Advanced Materials Engineering, Dong-Eui University, Busan 47340, Korea;
Abstract:
In the past decade, perovskite materials have gained intensive interest due to their remarkable material properties in optoelectronics and photodetectors. This review highlights recent advances in micro-to-nanometer scale patterning of perovskite inks, placing an undue emphasis on recently developed approaches to harness spatially ordered and crystallographically oriented structures with unprecedented regularity via controlled self-assemblies, including blade coating, inkjet printing, and nanoimprinting. Patterning of the perovskite elements at the micro- or nanometer scale might be a key parameter for their integration in a real system. Nowadays, unconventional approaches based on irreversible solution evaporation hold an important position in the structuring and integration of perovskite materials. Herein, easier type patterning techniques based on evaporations of polymer solutions and the coffee ring effect are systematically reviewed. The recent progress in the potential applications of the patterned perovskite inks is also introduced.
Keywords:perovskite inks   controlled self-assemblies   coffee ring effect   Marangoni flow   micro-to-nanoscale patterning
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