The directionality of quantum confinement on strain-induced quantum-wire lasers

1998 ◽  
Vol 83 (7) ◽  
pp. 3469-3472 ◽  
Author(s):  
S. T. Chou ◽  
D. E. Wohlert ◽  
K. Y. Cheng ◽  
K. C. Hsieh
1992 ◽  
Vol 267 (1-3) ◽  
pp. 593-600 ◽  
Author(s):  
E. Kapon ◽  
D.M. Hwang ◽  
M. Walther ◽  
R. Bhat ◽  
N.G. Stoffel

1991 ◽  
Vol 256 ◽  
Author(s):  
David L. Naylor ◽  
Sung B. Lee ◽  
John C. Pincenti ◽  
Brett E. Bouma

ABSTRACTPhotoluminescence spectra have been measured in porous silicon following electrochemical etching in dilute hydrofluoric acid (HF). The effects of HF concentration during etching on the efficiency and peak wavelength of photoluminescence have been investigated. The effects of temperature between 25°C and 200°C on PL spectra have been recorded. Photoluminescence lifetimes as a function of wavelength have been studied following ultrashort UV photoexcitation. A number of lifetime components in the decay are observed the longest in good agreement over the wavelength range of 500 to 600 nm with a silicon quantum wire model. At longer wavelengths a departure from lifetimes of the wire model is observed and two hypotheses for the discrepancy are presented.


1992 ◽  
Vol 60 (5) ◽  
pp. 521-523 ◽  
Author(s):  
M. Walther ◽  
E. Kapon ◽  
J. Christen ◽  
D. M. Hwang ◽  
R. Bhat

1992 ◽  
Vol 46 (23) ◽  
pp. 15270-15273 ◽  
Author(s):  
G. Ihm ◽  
M. L. Falk ◽  
S. K. Noh ◽  
S. J. Lee ◽  
T. W. Kim

1993 ◽  
Vol 298 ◽  
Author(s):  
Shulin Zhang ◽  
Kuoksan He ◽  
Yangtian Hou ◽  
Xin Wang ◽  
Jingjian Li ◽  
...  

AbstractA novel step—like and pinning behavior of photoluminescence peak energy connected with changes in the concentration of HIF and current density were for the first time observed for p— type porous silicon. Based on a theoretical calculation of the electron structure of the silicon quantum wire it is argued that these behaviors can be explained in terms of a novel formation mechanism model of porous silicon.


Author(s):  
S. Hillyard ◽  
Y.-P. Chen ◽  
J.D. Reed ◽  
W.J. Schaff ◽  
L.F. Eastman ◽  
...  

The positions of high-order Laue zone (HOLZ) lines in the zero order disc of convergent beam electron diffraction (CBED) patterns are extremely sensitive to local lattice parameters. With proper care, these can be measured to a level of one part in 104 in nanometer sized areas. Recent upgrades to the Cornell UHV STEM have made energy filtered CBED possible with a slow scan CCD, and this technique has been applied to the measurement of strain in In0.2Ga0.8 As wires.Semiconductor quantum wire structures have attracted much interest for potential device applications. For example, semiconductor lasers with quantum wires should exhibit an improvement in performance over quantum well counterparts. Strained quantum wires are expected to have even better performance. However, not much is known about the true behavior of strain in actual structures, a parameter critical to their performance.


2008 ◽  
Vol 128 (6) ◽  
pp. 285-291
Author(s):  
Takumi Okada ◽  
Kazuhiro Komori ◽  
Xue-Lun Wang ◽  
Mutsuo Ogura ◽  
Noriaki Tsurumachi

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