Visible Electro- and Photoluminescence from Porous Silicon and its Related Optoelectronic Properties

1991 ◽  
Vol 256 ◽  
Author(s):  
Nobuyoshi Koshida ◽  
Hideki Koyama
Keyword(s):  
Porous Silicon ◽  
Optical Absorption ◽  
Size Effect ◽  
Band Gap ◽  
Visible Region ◽  
Optoelectronic Properties ◽  
Porous Si ◽  
Quantum Size ◽  
Effect Model ◽  
Injection Type

ABSTRACTThe optoelectronic properties of porous Si (PS) are presented in terms of electroluminescence (EL), photoluminescence (PL), photoconduction (PC), and optical absorption. Observations of injection-type EL, efficient PL, band-gap widening, and photosensitivities In the visible region are consistent with the quantum size effect model in PS.

Optical absorption evidence of a quantum size effect in porous silicon

1993 ◽  
Vol 62 (10) ◽  
pp. 1155-1157 ◽  
Author(s):  
I. Sagnes ◽  
A. Halimaoui ◽  
G. Vincent ◽  
P. A. Badoz
Keyword(s):  
Porous Silicon ◽  
Optical Absorption ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Quantum Size

scholarly journals Evidence of quantum size effect in nanocrystalline silicon by optical absorption

2001 ◽  
Vol 63 (19) ◽  
Author(s):  
Takahiro Matsumoto ◽  
Jun-ichi Suzuki ◽  
Masato Ohnuma ◽  
Yoshihiko Kanemitsu ◽  
Yasuaki Masumoto
Keyword(s):  
Optical Absorption ◽  
Size Effect ◽  
Nanocrystalline Silicon ◽  
Quantum Size Effect ◽  
Quantum Size

Tuning band gap and optical properties of SnX2 nanosheets: Hybrid functional studies

2016 ◽  
Vol 30 (10) ◽  
pp. 1650120 ◽  
Author(s):  
P. Guo ◽  
Y. W. Luo ◽  
Y. Jia
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Band Gap ◽  
Electronic Structures ◽  
Threshold Values ◽  
Hybrid Functional ◽  
Functional Studies ◽  
Quantum Size ◽  
Light Activity ◽  
Optical Applications

Based on hybrid functional calculations, the electronic structures and optical properties are investigated in the monolayer and bilayer tin dichalcogenides SnX2 (X = S and Se) nanosheets. Numerical results show that quantum size effects are obvious on the electronic structures and optical absorption in the SnS2 and SnSe2 nanosheets. The band gap values increase when the nanosheets layer numbers decrease. Moreover, for SnSe2 nanosheet, the optical absorption coefficients are high and its threshold values lie in the visible light activity range. These results are interesting and indicate that SnS2 and SnSe2 nanosheets may serve as the promising candidates for visible optical applications.

Quantum size effect from n-type porous silicon

1998 ◽  
Vol 43-44 ◽  
pp. 655-659 ◽  
Author(s):  
Z Mouffak ◽  
H Aourag ◽  
J.D Moreno ◽  
J.M Martinez-Duart
Keyword(s):  
Porous Silicon ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Quantum Size

The Evidence of Quantum Size Effect from Photoluminescence of Low Temperature Oxidized Porous Si

1992 ◽  
Author(s):  
Anri Nakajima ◽  
Toru Itakura ◽  
Satoru Watanabe ◽  
Yoshihiro Sugita ◽  
Yasuo Nara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Porous Si ◽  
Quantum Size

Quantum size effect on optical absorption in a small spherical shell

1995 ◽  
Vol 51 (15) ◽  
pp. 10119-10126 ◽  
Author(s):  
Mikio Eto ◽  
Kiyoshi Kawamura
Keyword(s):  
Optical Absorption ◽  
Size Effect ◽  
Spherical Shell ◽  
Quantum Size Effect ◽  
Quantum Size

THEORY OF OPTICAL ABSORPTION IN A SMALL SPHERICAL SHELL: INVESTIGATION OF QUANTUM-SIZE EFFECT

1996 ◽  
Vol 03 (01) ◽  
pp. 151-155 ◽  
Author(s):  
MIKIO ETO ◽  
KIYOSHI KAWAMURA
Keyword(s):  
Optical Absorption ◽  
Size Effect ◽  
Resonant Frequency ◽  
Spherical Shell ◽  
Random Phase ◽  
System Size ◽  
Quantum Size Effect ◽  
Shell Shape ◽  
Hartree Fock ◽  
Quantum Size

To investigate the quantum-size effect on optical absorption spectra in a small metallic particle of a spherical shell shape, first-principles calculations are performed based on the Kubo formula. The resonant frequency of collective modes and their linewidth are studied systematically with Hartree-Fock and random-phase approximations, which are self-interaction-free methods. System-size dependence of the resonant frequency of the modes is in good agreement with the classical theory, while the linewidth reflects the quantum-size effect, which cannot be explained classically. The origin of the line broadening should be attributed to the Landau damping.

Light‐emission phenomena from porous silicon: Siloxene compounds and quantum size effect

1994 ◽  
Vol 75 (12) ◽  
pp. 8060-8065 ◽  
Author(s):  
H.‐J. Lee ◽  
Y. H. Seo ◽  
D.‐H. Oh ◽  
K. S. Nahm ◽  
Y. B. Hahn ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Size Effect ◽  
Light Emission ◽  
Quantum Size Effect ◽  
Quantum Size
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