Diamond semiconductor and diamond semiconductor light-emitting device that uses the semiconductor

A diamond semiconductor light-emitting device comprising:

• an n-type diamond semiconductor layer,
• a p-type diamond semiconductor layer formed while maintaining a predetermined interval between it and said n-type diamond semiconductor layer, and
• a high-quality undoped diamond semiconductor layer sandwiched between said n-type diamond semiconductor layer and said p-type diamond semiconductor layer,
• wherein an exciton light emission that varies nonlinearly according to a current value is output from said undoped diamond semiconductor layer when current is injected to respective electrodes formed on said n-type and p-type diamond semiconductor layers.

A diamond semiconductor light-emitting device comprising:

• a high-quality n-type diamond semiconductor layer,
• a high-quality p-type diamond semiconductor layer formed in contact with said n-type diamond semiconductor layer, and
• an activation region layer formed in an interface between said n-type diamond semiconductor layer and said p-type diamond semiconductor layer,
• wherein an exciton light emission that varies nonlinearly according to a current value is output from the activation region layer when current is injected to respective electrodes formed on said n-type and p-type diamond semiconductor layers.