IBC 全背接触

IBC (Interdigitated Back Contact) cells have both positive and negative electrodes on the rear surface, leaving the front completely free of busbars. This maximizes sunlight absorption and yields 23-25%+ cell efficiency. The design is aesthetically superior (no visible front wires). Major IBC producers: SunPower (Maxeon), LG, LONGi (via HPBC variant). Premium pricing $0.15-0.20/W FOB places IBC primarily in high-end residential and small commercial markets, not utility-scale.