Structural And Optical Properties Of Molybdenum Disulfide Thin Films Grown By Thermal Vapour Sulfurization

Simple item page
dc.contributor.authorTan, Aik Leng
dc.date.accessioned2021-01-14T03:06:12Z
dc.date.available2021-01-14T03:06:12Z
dc.date.issued2019-05
dc.description.abstractIn this work, the molybdenum disulfide (MoS2) thin films were grown by using thermal vapour sulfurization (TVS) technique. Spin coating method was used to deposit MoS-based films due to its ability to coat flat and homogeneous films. The dual source precursor (DSP) approach is applied for the precursor solution preparation prior to the spin coating process. Several molybdenum oxide compounds were present in the intermediate product. These compounds were formed by the sequence of molybdenum oxide (MoO3) → intermediate molybdenum oxide (Mo4O11) → molybdenum dioxide (MoO2). However, none of the Mo-O and Mo-S related bondings were detected due to the domination of infrared (IR) characteristics from ethylenediamine solvent. Next, the growth optimizing studies were first conducted by using silicon substrate. The sulfurization duration and temperature of 40 min and 850 °C were obtained as the optimum sulfurization conditions for the TVS technique. Also, sulfurization process was the crucial process in growing the MoS2 thin films and the early formation of Mo-S started at second stage of thermal processes. Subsequently, the optimum sulfurization conditions were used to study the growth of MoS2 thin films on different substrates. Single crystalline substrate with the hexagonal lattice system (sapphire) enhanced the growth of MoS2 thin films. This is due to the lower lattice mismatch and similar crystal symmetry which smoothen the surface nature of MoS2 thin films.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/10845
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectMolybdenum Disulfide Thin Filmsen_US
dc.subjectThermal Vapour Sulfurizationen_US
dc.titleStructural And Optical Properties Of Molybdenum Disulfide Thin Films Grown By Thermal Vapour Sulfurizationen_US
dc.typeThesisen_US
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Pusat Pengajian Sains Fizik - Tesis