scholarly journals Synthesis and fluorescence properties of columnar porous silicon: the influence of Cu-coating on the photoluminescence behaviour of hydrofluoric-acid-treated aged columnar porous silicon

2015 ◽  
Vol 39 (8) ◽  
pp. 6267-6273 ◽  
Author(s):  
Xu Lu ◽  
Yohei Ishida ◽  
Tetsu Yonezawa
Keyword(s):  
High Temperature ◽  
Porous Silicon ◽  
Hydrofluoric Acid ◽  
Temperature Treatment ◽  
Fluorescence Properties ◽  
High Temperature Treatment ◽  
Yellow Luminescence

The prepared Cu-PSi shows relatively stable blue and yellow luminescence peaks. The preparation does not require any high-temperature treatment.

High-Temperature Treatment of Porous Silicon

1987 ◽  
Vol 102 (1) ◽  
pp. 193-198 ◽  
Author(s):  
V. A. Labunov ◽  
V. P. Bondarenko ◽  
V. E. Borisenko ◽  
A. M. Dorofeev
Keyword(s):  
High Temperature ◽  
Porous Silicon ◽  
Temperature Treatment ◽  
High Temperature Treatment

Formation and Luminescent Properties of Oxidized Porous Silicon Doped with Erbium by Electrochemical Procedure

1998 ◽  
Vol 536 ◽  
Author(s):  
V. Bondarenko ◽  
N. Vorozov ◽  
L. Dolgyi ◽  
V. Yakovtseva ◽  
V. Petrovich ◽  
...  
Keyword(s):  
High Temperature ◽  
Porous Silicon ◽  
Optical Waveguides ◽  
Energy Levels ◽  
Luminescent Properties ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Total Oxidation ◽  
Oxidized Porous Silicon ◽  
Er Doped

AbstractThe present work is concerned with Er-doped oxidized porous silicon (PS). The characteristic feature of the work is that PS doping has been realized by an electrochemical procedure followed by a high temperature treatment. 5-μm thick PS layers were formed on p-type Si of 0.3-Ohm-cm resistivity. Er incorporation was performed by a cathodic polarization of PS in a 0.1 M Er(NO3)3 aqueous solution. A high temperature treatment in an oxidizing ambient at 500-1000°C was utilized to provide either partial or total oxidation of PS:Er layers. X-ray microanalysis was used to study chemical composition of the samples. Photoluminescence (PL) and photoluminescence excitation (PLE) spectra were investigated. After the partial oxidation (in the temperature range of 600-800°C), weak Er3+-related PL at 1.53 ptm was observed. A high temperature anneal in Ar atmosphere at the temperature of 1100°C caused a significant increase in the Er3+-related PL intensity. Resonant features were observed in PLE spectra of fully oxidized PS. Five peaks at 381, 492, 523, 654 and 980 nm were revealed. The strongest excitation occurred at 381 and 523 nm. The excitation of different Er3+ energy levels, cross-relaxation interactions and emission due to the 4I13/2→4I15/2 transitions were considered. Application of the Er-doped oxidized PS for integrated optical waveguides is presented.

An experimental study on the fracture behaviors of marble specimens subjected to high temperature treatment

2020 ◽  
Vol 225 ◽  
pp. 106862 ◽  
Author(s):  
Qingzhen Guo ◽  
Haijian Su ◽  
Jiawei Liu ◽  
Qian Yin ◽  
Hongwen Jing ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Fracture Behaviors
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