The first solar cell developed was an N-type cell, yet in subsequent years the P-type cell prevailed. The reason for this was that in the early days the modules were mainly used in the aerospace industry, where the P-type modules had proved to be more resistant. Only in recent years have solar cell manufacturers begun to rethink their approach, which is due to the greater performance of the N-type cells. The main reason for this is the longer service life of these cells, because unlike the P-type, they are not threatened by the "boron-oxygen defect". This leads to a loss of efficiency with increasing operating time. In addition, N-type solar cells are less susceptible to metallic contamination of the silicon. This also means that they are virtually "immune" to light-induced degradation (LID) and potential-induced degradation (PID). quasi „immun“ gegen lichtinduzierte Degradation (LID) und potenzialinduzierten Degradation (PID) sind.

TopCon modules offer the highest efficiency. Due to the crystalline N-Type TopCon cell core (Tunnel Oxide Passivated Contact), more sunlight is converted into electricity. The N-Type cells have a significantly better resistance to high temperatures. This property increases the longevity of the modules as well as the efficiency compared to P-Type cell technology. In addition, there is better low-light behavior. Compared to the standard module, this means + 2 % more power, + 4 % more power over 30 years, a calculated lower space requirement and, as a result, lower installation costs.