Improved epitaxial layer design for real‐time monitoring of dry etching in III–V compound heterostructures with depth accuracy of ±8 nm

1994 ◽  
Vol 12 (4) ◽  
pp. 1973-1977 ◽  
Author(s):  
G. Allen Vawter ◽  
John F. Klem ◽  
Ron E. Leibenguth
1995 ◽  
Vol 406 ◽  
Author(s):  
Joseph Eng ◽  
Hongbin Fang ◽  
Chaochin Su ◽  
Sujata Vemuri ◽  
Irving P. Herman ◽  
...  

AbstractSurface photoabsorption (SPA) has been applied to monitor, in real time, the surface of GaAs(100) during chemical dry etching by a molecular beam of HCl. Changes in the HCl flux to the surface at a constant temperature (840 K) have been used to induce changes in the Ga:As ratio on the surface. These changes in surface stoichiometry have been detected in situ via SPA measurements of the transient fractional change in the reflectance of p-polarized, 488 nm light that is incident onto the surface near the pseudo-Brewster angle. On the basis of results from prior applications of SPA to the study the atomic layer deposition of GaAs, the changes in the SPA signal as a function of the etching parameters can be correlated with changes in the relative surface densities of Ga and As. The findings are confirmed by independent determinations of the changes in surface stoichiometry made by measuring the time-integrated difference in the fluxes of Ga- and As-containing etching products evolved from the surface as a function of the HC1 flux.


2006 ◽  
Vol 175 (4S) ◽  
pp. 521-521
Author(s):  
Motoaki Saito ◽  
Tomoharu Kono ◽  
Yukako Kinoshita ◽  
Itaru Satoh ◽  
Keisuke Satoh

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-1175-Pr3-1182 ◽  
Author(s):  
M. Losurdo ◽  
A. Grimaldi ◽  
M. Giangregorio ◽  
P. Capezzuto ◽  
G. Bruno

2014 ◽  
Author(s):  
Rozaimi Ghazali ◽  
◽  
Asiah Mohd Pilus ◽  
Wan Mohd Bukhari Wan Daud ◽  
Mohd Juzaila Abd Latif ◽  
...  

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 101-LB
Author(s):  
ABHINAV BHUSHAN ◽  
SONALI J. KARNIK

2017 ◽  
Vol 4 (4) ◽  
pp. 20
Author(s):  
KAVITHA T. ◽  
PREETHI D. LAVANYA ◽  
SARANYA S. ◽  
ANCY EVERT P.M. JONAH ◽  
◽  
...  

2010 ◽  
Vol 9 (1) ◽  
pp. 133-140
Author(s):  
Petrisor Zamora Iordache ◽  
Nicoleta Petrea ◽  
Vasile Somoghi ◽  
Mihaela Muresan ◽  
Gabriel Epure ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document