Silicon ingot, silicon block, silicon substrate, and solar cell

A silicon ingot having a first surface, a second surface opposite to the first surface, and a third surface extending in a first direction from the second surface to the first surface and connecting the first surface and the second surface, the silicon ingot comprising:

• a first mono-like crystalline portion;
• a first intermediate portion including one or more mono-like crystalline sections;
• and
• a second mono-like crystalline portion,
• wherein the first mono-like crystalline portion, the first intermediate portion, and the second mono-like crystalline portion are adjacent to one another in sequence in a second direction perpendicular to the first direction,
• a first width of the first mono-like crystalline portion and a second width of the second mono-like crystalline portion each are greater than a third width of the first intermediate portion in the second direction,
• a first boundary between the first mono-like crystalline portion and the first intermediate portion and a second boundary between the second mono-like crystalline portion and the first intermediate portion each include a coincidence boundary,
• at least one of the first boundary or the second boundary is curved in an imaginary cross section perpendicular to the first direction, and
• a crystal direction of each of the first mono-like crystalline portion, the second mono-like crystalline portion and the one or more mono-like crystalline sections in the first intermediate portion is parallel to the first direction and has Miller indices of <100>.