Solar cell element and solar cell module

A solar cell element, comprising:

• a semiconductor substrate that comprises a semiconductor region of one conductivity type and a layer of an opposite conductivity type to the one conductivity type with a first surface serving as a light-receiving surface, a second surface located on a back side of the first surface, and a side surface connecting the first surface and the second surface, in which over a surface on the first surface side, a surface on the side surface side, and a surface of an outer peripheral portion on the second surface side of the semiconductor region of the one conductivity type, the layer of the opposite conductivity type to the one conductivity type is formed such that a first pn junction region is provided along the respective surfaces of the first surface, the side surface, and the outer peripheral portion of the second surface and in which a high-concentration doped layer having higher concentration of impurities of the one conductivity type than the semiconductor region is further formed on a surface that is not the outer peripheral portion on the second surface side of the semiconductor region;
• a first electrode of the one conductivity type located on the high-concentration doped layer of the second surface so as to be adjacent to the first pn junction region,
• wherein the semiconductor substrate includes a first trench portion located between the outer periphery of the second surface and an end portion of the first electrode and spaced from the first electrode and the high-concentration doped layer and configured to isolate the first pn junction region on the second surface along the outer periphery of the second surface, and
• wherein, when viewed from the second surface side in plan view, a shortest distance Q between the end portion of the first electrode and the first trench portion is smaller than a shortest distance P between a pn junction of the first pn junction region of the side surface side and the first trench portion:
• and
• at least one of a first bump and a second bump, the first bump located at an intersection of an inner peripheral surface of the first trench portion and a portion of the second surface on an outer side with respect to the first trench portion, the second bump located at an intersection of the inner peripheral surface of the first trench portion and a portion of the second surface on an inner side with respect to the first trench portion, wherein the first bump and the second bump project in a normal direction of the second surface on the second surface.