The relationship between the distribution of electronic states and the optical absorption spectrum of an amorphous semiconductor: An empirical analysis

1997 ◽  
Vol 82 (7) ◽  
pp. 3334-3340 ◽  
Author(s):  
Stephen K. O’Leary ◽  
S. R. Johnson ◽  
P. K. Lim
Keyword(s):  
Absorption Spectrum ◽  
Optical Absorption ◽  
Empirical Analysis ◽  
Optical Absorption Spectrum ◽  
Electronic States ◽  
Amorphous Semiconductor ◽  
The Relationship

Effect of cation off-stoichiometry on optical absorption in epitaxial LaFeO3 films

2017 ◽  
Vol 19 (16) ◽  
pp. 10371-10376 ◽  
Author(s):  
Mark D. Scafetta ◽  
Steven J. May
Keyword(s):  
Absorption Spectrum ◽  
Electronic Structure ◽  
Optical Absorption ◽  
Optical Absorption Spectrum ◽  
Defect Chemistry ◽  
Epitaxial Films ◽  
Perovskite Oxide ◽  
Cation Deficiency ◽  
The Relationship

The effect of A- and B-site cation deficiency on the optical absorption spectrum is presented for a series of LaFeO3−δ epitaxial films providing insights into the relationship between defect chemistry and electronic structure in this semiconducting perovskite oxide.

Article

1998 ◽  
Vol 76 (4) ◽  
pp. 411-413
Author(s):  
Yixing Zhao ◽  
Gordon R Freeman
Keyword(s):  
Absorption Spectrum ◽  
Optical Absorption ◽  
Temperature Dependence ◽  
Optical Absorption Spectrum ◽  
Infrared Light ◽  
Solvated Electron ◽  
Solvated Electrons ◽  
Tert Butanol ◽  
Solvent Dependence ◽  
Increasing Temperature

The energy and asymmetry of the optical absorption spectrum of solvated electrons, es- , change in a nonlinear fashion on changing the solvent through the series HOH, CH3OH, CH3CH3OH, (CH3)2CHOH, (CH3)3COH. The ultimate, quantum-statistical mechanical, interpretation of solvated electron spectra is needed to describe the solvent dependence. The previously reported optical spectrum of es- in tert-butanol was somewhat inaccurate, due to a small amount of water in the alcohol and to limitations of the infrared light detector. The present note records the remeasured spectrum and its temperature dependence. The value of the energy at the absorption maximum (EAmax) is 155 zJ (0.97 eV) at 299 K and 112 zJ (0.70 eV) at 338 K; the corresponding values of G epsilon max (10-22 m2 aJ-1) are 1.06 and 0.74. These unusually large changes are attributed to the abnormally rapid decrease of dielectric permittivity of tert-butanol with increasing temperature. The band asymmetry at 299 K is Wb/Wr = 1.8.Key words: optical absorption spectrum, solvated electron, solvent effects, tert-butanol, temperature dependence.

scholarly journals Monitoring mechanical motion of carbon nanotube based nanomotor by optical absorption spectrum

2016 ◽  
Vol 109 (26) ◽  
pp. 263104 ◽  
Author(s):  
Baomin Wang ◽  
Xuewei Cao ◽  
Zhan Wang ◽  
Yong Wang ◽  
Kaihui Liu
Keyword(s):  
Absorption Spectrum ◽  
Carbon Nanotube ◽  
Optical Absorption ◽  
Optical Absorption Spectrum ◽  
Mechanical Motion
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