Luminescence Properties of Low-dimension MoS2 Hybrid-nanosheets

XIN Hong-qiang; HOU Xin-gang; HAN Xiu-xun

doi:10.3788/fgxb20153604.0419

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Luminescence Properties of Low-dimension MoS₂ Hybrid-nanosheets

更新时间：2020-08-12

- Luminescence Properties of Low-dimension MoS₂ Hybrid-nanosheets
- Chinese Journal of Luminescence Vol. 36, Issue 4, Pages: 419-423(2015)
- 作者机构：
  
  1. 兰州理工大学材料科学与工程学院,甘肃兰州,730050
  2. 省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州,730050
  3. 中国科学院兰州化学物理研究所兰州,730000
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153604.0419
  CLC： O644;O482.31
- Received：22 January 2015，
  
  Revised：17 February 2015，
  
  Published：03 April 2015
- 稿件说明：
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信红强, 侯新刚, 韩修训. 低维MoS2混合纳米片的发光特性[J]. 发光学报, 2015,36(4): 419-423

XIN Hong-qiang, HOU Xin-gang, HAN Xiu-xun. Luminescence Properties of Low-dimension MoS2 Hybrid-nanosheets[J]. Chinese Journal of Luminescence, 2015,36(4): 419-423
信红强, 侯新刚, 韩修训. 低维MoS2混合纳米片的发光特性[J]. 发光学报, 2015,36(4): 419-423 DOI： 10.3788/fgxb20153604.0419.

XIN Hong-qiang, HOU Xin-gang, HAN Xiu-xun. Luminescence Properties of Low-dimension MoS2 Hybrid-nanosheets[J]. Chinese Journal of Luminescence, 2015,36(4): 419-423 DOI： 10.3788/fgxb20153604.0419.

摘要

采用液相剥离法剥离MoS

块体材料

通过选择合适的剥离剂、超声时间、超声功率得到含有不同尺寸且分散均匀的MoS

混合纳米薄片悬浮溶液。在360 nm光激发下

这种悬浮液表现出单层MoS

及小尺寸MoS

纳米颗粒的复合发光特征。与微机械剥离得到的单层MoS

的发光特性相比

这种液相法得到的混合纳米薄片在512 nm处的最强发光峰位发生明显蓝移。混合纳米薄片在横向尺度上所产生的量子限制效应可能是导致该峰位蓝移的主要原因。

Abstract

By using liquid exfoliation method with sonication in appropriate stripping solvent

ultrasonic time

ultrasonic power

MoS

hybrid-nanosheets suspension with different lateral dimension and uniform dispersion nanosheets were obtained. Under 360 nm excitation

the suspension shows both the luminescence properties of monolayer MoS

and small MoS

nanoparticles. The strongest peak of the sample is centered at 512 nm

and shows obvious blue-shifted compared with that of monolayers MoS

exfoliated by the micromechanically cleavage method. The blue-shifted luminescence is mainly caused by the strong quantum confinement effect of the MoS

hybrid nanosheets which produced in horizontal dimension as well.

关键词

Keywords

references

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Li H, He X, Kang Z, et al. Water-soluble fluorescent carbon quantum dots and photocatalyst design [J]. Angew. Chem., 2010, 49(26):4430-4434.

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