Determination of energy band gap of nanocrystalline SbSI using diffuse reflectance spectroscopy

2009 ◽  
Vol 80 (4) ◽  
pp. 046107 ◽  
Author(s):  
M. Nowak ◽  
B. Kauch ◽  
P. Szperlich
Keyword(s):  
Band Gap ◽  
Energy Band ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Energy Band Gap

scholarly journals Automated method for the determination of the band gap energy of pure and mixed powder samples using diffuse reflectance spectroscopy

Heliyon ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. e01505 ◽  
Author(s):  
A. Escobedo-Morales ◽  
I.I. Ruiz-López ◽  
M.deL. Ruiz-Peralta ◽  
L. Tepech-Carrillo ◽  
M. Sánchez-Cantú ◽  
...  
Keyword(s):  
Band Gap ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Band Gap Energy ◽  
Mixed Powder ◽  
Gap Energy ◽  
Automated Method ◽  
Powder Samples

scholarly journals Absorption and Remission Characterization of Pure, Dielectric (Nano-)Powders Using Diffuse Reflectance Spectroscopy: An End-To-End Instruction

2019 ◽  
Vol 9 (22) ◽  
pp. 4933 ◽  
Author(s):  
Sergej Bock ◽  
Christian Kijatkin ◽  
Dirk Berben ◽  
Mirco Imlau
Keyword(s):  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Mie Scattering ◽  
Reflectance Spectroscopy ◽  
Visible Spectral Range ◽  
Host Matrix ◽  
Material Sciences ◽  
End To End

This paper addresses the challenging task of optical characterization of pure, dielectric (nano-)powders with the aim to provide an end-to-end instruction from appropriate sample preparation up to the determination of material remission and absorption spectra. We succeeded in establishing an innovative preparation procedure to reproducibly obtain powder pellet samples with an ideal Lambertian scattering behavior. As a result, a procedure based on diffuse reflectance spectroscopy was developed that allows for (i) performing reproducible and artifact-free, high-quality measurements as well as (ii) a thorough optical analysis using Monte Carlo and Mie scattering simulations yielding the absorption spectrum in the visible spectral range. The procedure is valid for the particular case of powders that can be compressed into thick, non-translucent pellets and neither requires embedding of the dielectric (nano-)powders within an appropriate host matrix for measurements nor the use of integrating spheres. The reduced spectroscopic procedure minimizes the large number of sources for errors, enables an in-depth understanding of non-avoidable artifacts and is of particular advantage in the field of material sciences, i.e., for getting first insights to the optical features of a newly synthesized, pure dielectric powder, but also as an inline inspection tool for massively parallelised material characterization.

Determination of the Energy Band Gap Depending on the Oxidized Structures of Quantum Dots

2012 ◽  
Vol 116 (21) ◽  
pp. 11792-11796 ◽  
Author(s):  
Eunseog Cho ◽  
Hyosook Jang ◽  
Shinae Jun ◽  
Hyun A Kang ◽  
Jae Gwan Chung ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Band Gap ◽  
Energy Band ◽  
Energy Band Gap
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