Optical characterization of lead iodide grown by chemical vapor transport method

2020 ◽  
Vol 59 (SG) ◽  
pp. SGGK12
Author(s):  
Bo-Cheng Guo ◽  
Der-Yuh Lin ◽  
Hung-Pin Hsu ◽  
Sheng-Beng Hwang
Keyword(s):  
Chemical Vapor ◽  
Optical Characterization ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Lead Iodide ◽  
Transport Method ◽  
Vapor Transport Method

Optical Characterization of Undoped and Au-Doped MoS2 Single Crystals

2014 ◽  
Vol 627 ◽  
pp. 50-53 ◽  
Author(s):  
Mula Sigiro ◽  
Ying Sheng Huang ◽  
Ching Hwa Ho
Keyword(s):  
Single Crystals ◽  
Chemical Vapor ◽  
Optical Characterization ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Temperature Dependent ◽  
Direct Band ◽  
Transport Method ◽  
Vapor Transport Method

Single crystals of undoped and Au-doped MoS2were grown by the chemical vapor transport method using iodine as a transporting agent. The doping effect of the Au was characterized by temperature-dependent piezoreflectance (PzR) spectroscopy measurements in broad range of temperatures from 25 to 300 K. The temperature dependent PzR spectra revealed prominent features in the vicinity of direct-band-edge excitons for both investigated samples. The energies and broadening parameters of the A and B excitons were determined via a detailed line shape fit of the PzR spectra. We observed that Au doping strongly reduces the splitting between A and B excitons as well as it causes the redshift of observed transitions in relation to the undoped MoS2. The origin of observed excitons was discussed.

One-step synthesis of a hierarchical self-supported WS2 film for efficient electrocatalytic hydrogen evolution

2019 ◽  
Vol 7 (39) ◽  
pp. 22405-22411 ◽  
Author(s):  
Min Wang ◽  
Li Zhang ◽  
Meirong Huang ◽  
Qifan Zhang ◽  
Xuanliang Zhao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hierarchical Structure ◽  
Hydrogen Evolution Reaction ◽  
Chemical Vapor ◽  
Tungsten Disulfide ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
One Step ◽  
Transport Method ◽  
Vapor Transport Method

A tungsten disulfide film with a hierarchical structure is synthesized by surface-assisted chemical vapor transport method and applied as a self-supported electrode for the hydrogen evolution reaction, showing superior electrocatalytic performance.

Structural and physical properties of FeSe crystals fabricated by the chemical vapor transport method

2010 ◽  
Vol 470 ◽  
pp. S313-S314 ◽  
Author(s):  
Y. Hara ◽  
K. Takase ◽  
A. Yamasaki ◽  
H. Sato ◽  
N. Miyakawa ◽  
...  
Keyword(s):  
Physical Properties ◽  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Transport Method ◽  
Vapor Transport Method

scholarly journals Structure and optical characterization of ZnxCd1−xTe thin films prepared by the close spaced vapor transport method

1991 ◽  
Vol 9 (3) ◽  
pp. 550-553 ◽  
Author(s):  
J. González‐Hernández ◽  
O. Zelaya ◽  
J. G. Mendoza‐Alverez ◽  
E. López‐Cruz ◽  
D. A. Pawlik ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Characterization ◽  
Vapor Transport ◽  
Transport Method ◽  
Vapor Transport Method

scholarly journals High Optical Response of Niobium-Doped WSe2-Layered Crystals

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1161 ◽  
Author(s):  
Hung-Pin Hsu ◽  
Der-Yuh Lin ◽  
Jhin-Jhong Jheng ◽  
Pin-Cheng Lin ◽  
Tsung-Shine Ko
Keyword(s):  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Near Band Edge ◽  
Frequency Dependent ◽  
Time Resolved ◽  
Niobium Doped ◽  
Layered Crystals ◽  
Transport Method ◽  
Vapor Transport Method

The optical properties of WSe2-layered crystals doped with 0.5% niobium (Nb) grown by the chemical vapor transport method were characterized by piezoreflectance (PzR), photoconductivity (PC) spectroscopy, frequency-dependent photocurrent, and time-resolved photoresponse. With the incorporation of 0.5% Nb, the WSe2 crystal showed slight blue shifts in the near band edge excitonic transitions and exhibited strongly enhanced photoresponsivity. Frequency-dependent photocurrent and time-resolved photoresponse were measured to explore the kinetic decay processes of carriers. Our results show the potential application of layered crystals for photodetection devices based on Nb-doped WSe2-layered crystals.

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