A photosemiconductor device comprises a plurality fo quantum dots 22, and the plural quantum dots 22 have disuniform sizes. Quantum dots of disuniform sizes are formed by a low area ratio, whereby the photosemiconductor device can have a wide gain band.

Un dispositivo del photosemiconductor abarca los puntos 22 de la pluralidad de un quántum del fo, y los puntos plurales 22 del quántum tienen tamaños del disuniform. Los puntos de Quantum de los tamaños del disuniform son formados por un cociente bajo del área, por el que el dispositivo del photosemiconductor pueda tener una venda ancha del aumento.

 
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