期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 8, 期 24, 页码 6211-6219出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.7b02843
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资金
- NSFC [61674060, 11574305, 51527901]
- Fundamental Research Funds for the Central Universities, HUST [2017KFYXJJ030, 2017KFXKJC003]
- National Basic Research Program of China [2016YFA0301200, 2017YFA0303401]
- National Young 1000 Talent Plan of China
Two-dimensional Ruddlesden-Popper type perovskites (2D perovskites) have recently attracted increasing attention. It is expected that 2D perovskite-based heterostructures can significantly improve the efficiency of the optoelectronic devices and extend the material fiinctionalities; however, rational synthesis of such heterostructures has not been realized to date. We report on a general low temperature synthetic strategy for the synthesis of 2D perovskite-based lateral and vertical (n-CH3(CH2)(3)NH3)(2)PbI4/(n-CH3(CH2)(3)NH3)(2)(CH3NH3)Pb2I7 heterostructures for the first time. A combination of solution synthesis and gas solid phase intercalation approach allows us to efficiently synthesize both lateral and vertical heterostructures with great flexibility. X-ray diffraction, photoluminescence, and photoluminescence excitation mapping and electrical transport measurement studies reveal the successful synthesis of lateral and vertical heterostructures with precisely spatial-modulation control and distinguishable interfaces. Our studies not only provide an efficient synthetic strategy with great flexibility, enabling us to create 2D perovskite-based heterostructures, but also offer a platform to investigate the physical processes in those heterostructures.
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