Prolonging exciton lifetime of WSe2 monolayer through image dipole interaction leading to huge enhancement of photocurrent

doi:10.1515/nanoph-2022-0590

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	Prolonging exciton lifetime of WSe2 monolayer through image dipole interaction leading to huge enhancement of photocurrent
	K. J. Lee; J. P. So; S. K. Chamoli; H. C. Lee; H. G. Park and M. H. Cho
	2023
发表期刊	Nanophotonics
ISSN	2192-8606
页码	9
摘要	Two-dimensional transition metal dichalcogenides (2D TMDs) have been demonstrated as one of the most outstanding materials not only for fundamental science but also for a wide range of photonic applications. However, an efficient way to control their excitonic properties is still needed for advanced applications with superior device performance. Here, we show that the exciton lifetime of WSe2 monolayer can be prolonged using metamaterials. We observe a similar to 100% reduction in the electron-hole recombination rate of WSe2 monolayer placed on a hyperbolic metamaterial substrate and demonstrate that such a remarkable change results from the destructive image dipole interaction with the in-plane exciton transition dipole. Furthermore, this substantial increase in exciton lifetime leads to order-of-magnitude (10-fold) enhancement of photocurrent in the 2D WSe2-based hybrid photodetector with metamaterials. Tailoring the optical transition properties of 2D TMD materials with specially designed metamaterials, demonstrated here, will pave the way for developing 2D material-based optoelectronics.
DOI	10.1515/nanoph-2022-0590
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67591
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	K. J. Lee,J. P. So,S. K. Chamoli,et al. Prolonging exciton lifetime of WSe2 monolayer through image dipole interaction leading to huge enhancement of photocurrent[J]. Nanophotonics,2023:9.
APA	K. J. Lee,J. P. So,S. K. Chamoli,H. C. Lee,&H. G. Park and M. H. Cho.(2023).Prolonging exciton lifetime of WSe2 monolayer through image dipole interaction leading to huge enhancement of photocurrent.Nanophotonics,9.
MLA	K. J. Lee,et al."Prolonging exciton lifetime of WSe2 monolayer through image dipole interaction leading to huge enhancement of photocurrent".Nanophotonics (2023):9.

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