A light receiving element, comprising a semiconductor structure comprising at
least
a first conductivity type semiconductor layer, a first, second conductivity type
semiconductor layer provided on the first conductivity type semiconductor layer
in the semiconductor structure, a second, second conductivity type semiconductor
layer having an impurity concentration lower than that of the first, second conductivity
type semiconductor layer, a second, first conductivity type semiconductor layer
provided on the second, second conductivity type semiconductor layer, or a second,
first conductivity type semiconductor layer provided within the second, second
conductivity type semiconductor layer.