期刊
NATURE COMMUNICATIONS
卷 11, 期 1, 页码 -出版社
NATURE RESEARCH
DOI: 10.1038/s41467-020-19181-2
关键词
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资金
- centre for Advanced Soft Electronics under the Global Frontier Research Program through the National Research Foundation by the Ministry of Science and ICT, Korea [NRF-2017R1E1A1A01074493, NRF-2019R1A4A1027934, CASE-2013M3A6A5073173]
- JSPS KAKENHI [JP19K05223, JP18K14119, JP16H06333]
- European Union's Horizon 2020 research and innovation programme [881603]
- CERCA Programme/Generalitat de Catalunya
- Severo Ochoa program from Spanish MINECO [SEV-2017-0706]
- PAIP Facultad de Quimica, UNAM [5000-9173]
- National Research Foundation of Korea [4199990214002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Atomically sharp heterojunctions in lateral two-dimensional heterostructures can provide the narrowest one-dimensional functionalities driven by unusual interfacial electronic states. For instance, the highly controlled growth of patchworks of graphene and hexagonal boron nitride (h-BN) would be a potential platform to explore unknown electronic, thermal, spin or optoelectronic property. However, to date, the possible emergence of physical properties and functionalities monitored by the interfaces between metallic graphene and insulating h-BN remains largely unexplored. Here, we demonstrate a blue emitting atomic-resolved heterojunction between graphene and h-BN. Such emission is tentatively attributed to localized energy states formed at the disordered boundaries of h-BN and graphene. The weak blue emission at the heterojunctions in simple in-plane heterostructures of h-BN and graphene can be enhanced by increasing the density of the interface in graphene quantum dots array embedded in the h-BN monolayer. This work suggests that the narrowest, atomically resolved heterojunctions of in-plane two-dimensional heterostructures provides a future playground for optoelectronics. Here, the authors explore the blue photoluminescence signal arising from the interface between graphene and h-BN arranged in in-plane heterostructures, and fabricate a blue light emitting device utilizing the heterojunction as the emitting layer.
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