improvement.
From the technical route of BC, it can be roughly divided into IBC (Interdigitated Back Contact, cross Back contact), HPBC, TBC (Tunneling oxide passivated contact Back Contact, Tunnel oxide passivation contact), ABC, HBC (Hetero Junction Back contact).
Among them, IBC is a relatively pure single-sided battery technology, which can be superimposed with P-type, N-type, perovskite and
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