Schottky diodes onn‐type InP with CdOx interfacial layers grown by the adsorption and oxidation method

1992 ◽  
Vol 72 (10) ◽  
pp. 5004-5006 ◽  
Author(s):  
H. Sawatari ◽  
O. Oda
Keyword(s):  
Schottky Diodes ◽  
Oxidation Method ◽  
Interfacial Layers

Characterization of Al/GaAs Schottky barriers with thin Si interfacial layers

1993 ◽  
Vol 51 ◽  
pp. 800-801
Author(s):  
M.W. Bench ◽  
T.J. Miller ◽  
M.I. Nathan ◽  
C.B. Carter
Keyword(s):  
Molecular Beam Epitaxy ◽  
Barrier Height ◽  
Molecular Beam ◽  
Schottky Diodes ◽  
Growth Conditions ◽  
High Energy ◽  
Exact Nature ◽  
Interfacial Layers ◽  
Transmission Electron ◽  
Layer Structures

It has been shown in previous reports that barrier height variations can be achieved in GaAs Schottky diodes grown using molecular beam epitaxy by utilizing a thin epitaxial Si layer (a few monolayers) between the GaAs and the Al contact. The effective barrier height was found to be dependent on the thickness and growth conditions of the Si layer. However, there has remained a question as to the exact nature of the interfacial Si layer. In the present investigation, samples with different Si layer thicknesses (no Si, 6 Å Si, and 20 Å Si, as determined in situ during growth using reflection high energy electron diffraction (RHEED)) were characterized using transmission electron microscopy (TEM) to determine the nature of the Si layers. In the present study, it was also found that the presence of the interfacial Si layers affected the growth orientation and morphology of the Al layers.The layer structures investigated were grown using molecular beam epitaxy in a system described elsewhere.

Interface states of Ag/(110)GaAs Schottky diodes without and with interfacial layers

1988 ◽  
Vol 64 (1) ◽  
pp. 218-224 ◽  
Author(s):  
W. Platen ◽  
H.‐J. Schmutzler ◽  
D. Kohl ◽  
K.‐A. Brauchle ◽  
K. Wolter
Keyword(s):  
Schottky Diodes ◽  
Interface States ◽  
Interfacial Layers

The morphologies and electrical properties of indium contacts on (100) cadmium telluride surfaces

1992 ◽  
Vol 50 (2) ◽  
pp. 1422-1423
Author(s):  
A.M. Letsoalo ◽  
M.E. Lee ◽  
E.O. de Neijs
Keyword(s):  
Electrical Properties ◽  
Cadmium Telluride ◽  
Methanol Solution ◽  
Electrical Characteristics ◽  
Metal Contacts ◽  
Deposition Technique ◽  
Interfacial Layers ◽  
Semiconductor Contacts ◽  
Grown Single Crystal ◽  
Diamond Abrasive

Semiconductor devices require metal contacts for efficient collection of electrical charge. The physics of these metal/semiconductor contacts assumes perfect, abrupt and continuous interfaces between the layers. However, in practice these layers are neither continuous nor abrupt due to poor nucleation conditions and the formation of interfacial layers. The effects of layer thickness, deposition rate and substrate stoichiometry have been previously reported. In this work we will compare the effects of a single deposition technique and multiple depositions on the morphology of indium layers grown on (100) CdTe substrates. The electrical characteristics and specific resistivities of the indium contacts were measured, and their relationships with indium layer morphologies were established.Semi-insulating (100) CdTe samples were cut from Bridgman grown single crystal ingots. The surface of the as-cut slices were mechanically polished using 5μm, 3μm, 1μm and 0,25μm diamond abrasive respectively. This was followed by two minutes immersion in a 5% bromine-methanol solution.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

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