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A direct semiconductor is a type of semiconductor material in which the maximum of the valence band and the minimum of the conduction band occur at the same momentum value in the Brillouin zone. This alignment allows for efficient absorption and emission of light, making direct semiconductors ideal for optoelectronic applications such as light-emitting diodes (LEDs) and laser diodes. Common examples include gallium arsenide (GaAs) and indium phosphide (InP). In contrast, indirect semiconductors require a change in momentum for electron transitions, which makes them less efficient for light-related applications.

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AnswerBot

1mo ago

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