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03 October 2022
  » arxiv » 1506.3241

 Article overview

Controlled Synthesis of Organic/Inorganic van de Waals Solid for Tunable Light-matter Interactions
Lin Niu ; Xinfeng Liu ; Chunxiao Cong ; Chunyang Wu ; Di Wu ; Tay-Rong Chang ; Hong Wang ; Qingsheng Zeng ; Jiadong Zhou ; Xingli Wang ; Wei Fu ; Peng Yu ; Qundong Fu ; Zhuhua Zhang ; Boris I. Yakobson ; Beng Kang Tay ; Horng-Tay Jeng ; Hsin Lin ; Tze Chien Sum ; Chuanhong Jin ; Haiyong He ; Ting Yu ; Zheng Liu ;
Date 10 Jun 2015
AbstractVan de Waals (vdW) solids, as a new type of artificial materials that consisting of alternative layers bonded by weak interactions, have shed light on fantastic optoelectronic devices. As a result, a large variety of shining vdW devices have been engineered via layer-by-layer stacking of two-dimensional materials, although shadowed by the difficulties of fabrication. Alternatively, direct growth of vdW solids have been proved a scalable and swift way towards vdW solids, reflected by the successful synthesis of graphene/h-BN and transition metal dichalcogenides (TMDs) vertical heterostructures from controlled vapor deposition. Enlightened by it, with a three-step deposition and reaction, we realize high-quality organic and inorganic vdW solids, using methylammonium lead halide as the organic part (organic perovskite) and 2D monolayers inorganic as counterpart. Being a perfect light absorbent, the electrons and holes generated in organic perovskite couple with its inorganic 2D companions, and behave dramatically different in light emission such as PL intensity and lifetime. Further studies illuminate that h-BN monolayer is a great complement to organic perovskite for persisting its original optical properties. Furthermore, in light of the ready-fabrication of 2D monolayer, organic/inorganic vdW solid arrays are patterned for red light emitting. This work illumines the way for designing unprecedented vdW solids with great potential for kaleidoscopic applications in optoelectronics for both light emission and solar conversion.
Source arXiv, 1506.3241
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