Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/156061
Title: Deterministic and scalable generation of exciton emitters in 2D semiconductor nanodisks
Authors: Feng, Shun
Zou, Chenji
Cong, Chunxiao
Shang, Jingzhi
Zhang, Jing
Chen, Yu
Wu, Lishu
Zhang, Hongbo
Huang, Zumeng
Gao, Weibo
Zhang, Baile
Huang, Wei
Yu, Ting
Keywords: Science::Physics::Optics and light
Engineering::Materials::Nanostructured materials
Issue Date: 2022
Source: Feng, S., Zou, C., Cong, C., Shang, J., Zhang, J., Chen, Y., Wu, L., Zhang, H., Huang, Z., Gao, W., Zhang, B., Huang, W. & Yu, T. (2022). Deterministic and scalable generation of exciton emitters in 2D semiconductor nanodisks. Advanced Optical Materials, 10(6), 2102702-. https://dx.doi.org/10.1002/adom.202102702
Project: RG199/17
RG93/19
NRF-CRP-212018-0007
Journal: Advanced Optical Materials
Abstract: In recent cryogenic measurements, narrow photoluminescence (PL) peaks due to diverse quantum emitters have been found at random locations of monolayer transition metal dichalcogenides (TMDs), which impedes precise optoelectronic applications. Thus, it is of great importance to truly regulate these localized exciton emissions by deterministic spatial and spectral control. Here, such desired emission is primarily demonstrated in monolayer WS2 nanodisks. The size-dependent PL studies indicate the clear evolution from the broad defect-band emission to a set of spectrally isolated narrow peaks (linewidth of ≈ sub nm) at 4.2 K, which is associated with the prevailing effect of edge defects with the shrinkage of the disk diameter, providing a narrow emission energy range for bound excitons. When the disk diameter is reduced to 300 nm, more than 80% of emitter peaks are located between 610 and 616 nm, verifying the effective control of emission wavelength of these photon emitters. Furthermore, the strategy is extended to prepare scalable WS2 nanodisk arrays based on flakes of hundreds of µm, and size-dependent narrow emissions of WSe2 nanodisks are testified. This work develops a defect-engineering strategy to generate localized exciton emitters toward the promising TMD-based optoelectronic applications.
URI: https://hdl.handle.net/10356/156061
ISSN: 2195-1071
DOI: 10.1002/adom.202102702
Rights: This is the peer reviewed version of the following article: Feng, S., Zou, C., Cong, C., Shang, J., Zhang, J., Chen, Y., Wu, L., Zhang, H., Huang, Z., Gao, W., Zhang, B., Huang, W. & Yu, T. (2022). Deterministic and scalable generation of exciton emitters in 2D semiconductor nanodisks. Advanced Optical Materials, 10(6), 2102702-, which has been published in final form at https://doi.org/10.1002/adom.202102702. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20230325
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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