Abstract
The authors report the growth and characterization of In Asy P1-y and Alδ In1-δ Asy P1-y buffer layers on InP by metal-organic vapor phase epitaxy. Under optimized growth conditions, they achieved sheet resistances of 2.8× 105 and 4.8× 104 /sq for single layer In As0.44 P0.56 (0.5 μm) and step-graded In As0.75 P0.25 In As0.42 P0.58 (0.0750.5 μm) layers, respectively. A bowing parameter for In Asy P1-y of -0.22 eV is found based on photoreflectance measurement. When 0.5 μm thick Al0.11 In0.89 As.62 P.38 is grown, they obtain sheet resistance and sheet carrier concentration of 7.76× 105 /sq and 7.92× 109 cm-2, respectively. This opens interesting possibilities for realizing high-performance metamorphic field-effect transistors based on strained InAs or In Asy P1-y (0.5
| Original language | English |
|---|---|
| Article number | 212113 |
| Journal | Applied Physics Letters |
| Volume | 90 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2007 |
| Externally published | Yes |
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