Density of states in the pseudo‐gap of amorphous silicon‐germanium alloys from electrical and optical measurements

1992 ◽  
Vol 60 (12) ◽  
pp. 1465-1467 ◽  
Author(s):  
T. Pisarkiewicz ◽  
A. Kolodziej ◽  
E. Schabowska‐Osiowska ◽  
T. Stapinski ◽  
A. Rodzik ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Density Of States ◽  
Silicon Germanium ◽  
Optical Measurements ◽  
Amorphous Silicon Germanium ◽  
Silicon Germanium Alloys

Metastable Defects in the Amorphous Silicon-Germanium Alloys

2003 ◽  
Vol 762 ◽  
Author(s):  
J. David Cohen
Keyword(s):  
Amorphous Silicon ◽  
Silicon Germanium ◽  
Dangling Bonds ◽  
Annealing Behavior ◽  
Fundamental Properties ◽  
Silicon Materials ◽  
Salient Features ◽  
The Individual ◽  
Amorphous Silicon Germanium ◽  
Silicon Germanium Alloys

AbstractThis paper first briefly reviews a few of the early studies that established some of the salient features of light-induced degradation in a-Si,Ge:H. In particular, I discuss the fact that both Si and Ge metastable dangling bonds are involved. I then review some of the recent studies carried out by members of my laboratory concerning the details of degradation in the low Ge fraction alloys utilizing the modulated photocurrent method to monitor the individual changes in the Si and Ge deep defects. By relating the metastable creation and annealing behavior of these two types of defects, new insights into the fundamental properties of metastable defects have been obtained for amorphous silicon materials in general. I will conclude with a brief discussion of the microscopic mechanisms that may be responsible.

Thermal relaxation of the electric conductivity in amorphous silicon-germanium alloys

1989 ◽  
Vol 40 (9) ◽  
pp. 6424-6427 ◽  
Author(s):  
Jeffrey Zhaohuai Liu ◽  
V. Chu ◽  
D. S. Shen ◽  
D. Slobodin ◽  
S. Wagner
Keyword(s):  
Amorphous Silicon ◽  
Electric Conductivity ◽  
Silicon Germanium ◽  
Thermal Relaxation ◽  
Amorphous Silicon Germanium ◽  
Silicon Germanium Alloys
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