Low-temperature photoluminescence emission of monolayer MoS2 on diverse substrates grown by CVD

Li, H.2; Zhu, X.2; Tang, Z. K.1; Zhang, X. H.2

2018-07

10.1016/j.jlumin.2018.03.052

JOURNAL OF LUMINESCENCE   影响因子和分区

0022-2313

1872-7883

Monolayer MoS2 films on three different substrates, SiO2/Si, quartz and sapphire are synthesized by the method of chemical vapor deposition (CVD). Through a series of the optical characterization methods, the films are confirmed to be uniform and continuous on micrometer scale with a reliable quality. Low-temperature photoluminescence (PL) properties of monolayer MoS2 on diverse substrates are primarily studied. As the temperature increases, a decrease in PL intensity and a red shift in PL wavelength are observed. This is because the thermal motion of the phonons becomes stronger, which means that the nonradiative recombination increases and the PL intensity decreases. And the reduction of semiconductor band gap contributes to the redshift of PL. Furthermore, the influence of the lattice structure and thermal conductivity of the substrate on the low-temperature PL of monolayer MoS2 is also discussed.

MoS2 film Low-temperature photoluminescence Diverse substrates

SCI ; EI

英语

第一 ; 通讯

Natural Science Foundation of Guangdong Province[2014A030313728]

Optics

Optics

WOS:000430713100031

ELSEVIER SCIENCE BV

20181304963186

Chemical vapor deposition ; Energy gap ; Layered semiconductors ; Molybdenum compounds ; Monolayers ; Photoluminescence ; Sapphire ; Silica ; Temperature ; Thermal conductivity

Gems:482.2.1 ; Thermodynamics:641.1 ; Light/Optics:741.1 ; Chemical Reactions:802.2

PHYSICS

Web of Science

1.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa 999078, Macau, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China

Li, H.,Zhu, X.,Tang, Z. K.,et al. Low-temperature photoluminescence emission of monolayer MoS2 on diverse substrates grown by CVD[J]. JOURNAL OF LUMINESCENCE,2018,199:210-215.

Li, H.,Zhu, X.,Tang, Z. K.,&Zhang, X. H..(2018).Low-temperature photoluminescence emission of monolayer MoS2 on diverse substrates grown by CVD.JOURNAL OF LUMINESCENCE,199,210-215.

Li, H.,et al."Low-temperature photoluminescence emission of monolayer MoS2 on diverse substrates grown by CVD".JOURNAL OF LUMINESCENCE 199(2018):210-215.