Manufacturing method for diamond semiconductor device
First Claim
1. A method of manufacturing a diamond semiconductor device, comprising the steps of:
- forming a diamond semiconductor layer on a substrate; and
doping nitrogen atoms into the diamond semiconductor layer by using a high density plasma of 1×
1011 -1×
1014 cm-3 to thereby form a diffusion layer in the diamond semiconductor layer.
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Abstract
A process of forming a semiconductor which allows n type doping to be applied to a diamond semiconductor layer is carried out so as to form a diamond semiconductor layer on a substrate, forming a layer of SiO2 over the diamond semiconductor layer and forming a resist pattern (14) over the SiO2 layer. Etching processing of the SiO2 layer via the resist pattern is carried out. Then, the exposed diamond layer is subjected to doping process under the following conditions; N2 =30SCCM'"'"', 1.33 Pa, 100° C., microwave 850 W (2.45 GHz), RF bias 0 W, pulse duty ratio 1:2, a pulse type supply being used for microwave irradiation. Damage to the material by this process imparts high density, doping to the diamond layer. High saturation doping is possible according to this process.
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Citations
9 Claims
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1. A method of manufacturing a diamond semiconductor device, comprising the steps of:
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forming a diamond semiconductor layer on a substrate; and doping nitrogen atoms into the diamond semiconductor layer by using a high density plasma of 1×
1011 -1×
1014 cm-3 to thereby form a diffusion layer in the diamond semiconductor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification