Solar cell unit comprising - a semiconductor body which is constructed as a solar cell and which has a front side and a rear side and with side surfaces formed between the front side and the rear side of the semiconductor body, wherein a first electrical connecting contact is formed on the front side and a second electrical connecting contact is formed on the rear side, - a support with an upper side and a lower side and with a first conductor track region and second conductor track region, which are formed on the upper side of the support as part of this support, wherein the two conductor track regions (40, 45) are spaced from one another and the first conductor track region is electrically connected with the first connecting contact and the second connecting contact is electrically connected with the second conductor track region in that the rear side of the semiconductor body is connected with a part of the second conductor track region by frictional couple, and - a secondary optical element, wherein the secondary element is formed integrally from an inorganic material and conducts light onto the front side of the semiconductor body, the secondary optical element having a lower side, wherein - the secondary optical element is formed to be flat at the lower side with the exception of a central region and has at the lower side in the central region a shaped portion, which is elevated relative to the surrounding area, with a planar surface and - the surface of the first shaped portion is arranged on the front side of the semiconductor body and is connected with the semiconductor body by force-locking coupling and - a polymer adhesive layer is formed not only between the first shaped portion at the lower side and the front side of the semiconductor body, but also between the surface, which surrounds the shaped portion, of the lower side and the upper side of the support so as to connect the secondary optical element with the semiconductor body and with the support by frictional couple, wherein - the polymer adhesive layer fills out the space between the lower side of the secondary optical element and the upper side of the support in pillow-like and interlocking manner and laterally terminates to be flush with the outer edge at the upper side of the support. - a semiconductor body which is constructed as a solar cell and which has a front side and a rear side and with side surfaces formed between the front side and the rear side of the semiconductor body, wherein a first electrical connecting contact is formed on the front side and a second electrical connecting contact is formed on the rear side, - a support with an upper side and a lower side and with a first conductor track region and second conductor track region, which are formed on the upper side of the support as part of this support, wherein the two conductor track regions (40, 45) are spaced from one another and the first conductor track region is electrically connected with the first connecting contact and the second connecting contact is electrically connected with the second conductor track region in that the rear side of the semiconductor body is connected with a part of the second conductor track region by frictional couple, and - a secondary optical element, wherein the secondary element is formed integrally from an inorganic material and conducts light onto the front side of the semiconductor body, the secondary optical element having a lower side, wherein - the secondary optical element is formed to be flat at the lower side with the exception of a central region and has at the lower side in the central region a shaped portion, which is elevated relative to the surrounding area, with a planar surface and - the surface of the first shaped portion is arranged on the front side of the semiconductor body and is connected with the semiconductor body by force-locking coupling and - a polymer adhesive layer is formed not only between the first shaped portion at the lower side and the front side of the semiconductor body, but also between the surface, which surrounds the shaped portion, of the lower side and the upper side of the support so as to connect the secondary optical element with the semiconductor body and with the support by frictional couple, wherein - the polymer adhesive layer fills out the space between the lower side of the secondary optical element and the upper side of the support in pillow-like and interlocking manner and laterally terminates to be flush with the outer edge at the upper side of the support.