HETEROJUNCTION BATTERY AND PREPARATION METHOD THEREFOR

A heterojunction battery and a preparation method therefor. The heterojunction battery comprises a crystalline silicon layer (1), wherein a first intrinsic amorphous silicon layer (2), an N-type doped amorphous silicon layer (3), a first transparent conductive layer (4) and a first metal electrode (5) are sequentially arranged on the front face of the crystalline silicon layer (1) from inside to outside, and a second intrinsic amorphous silicon layer (6), a P-type doped amorphous silicon layer (7), a second transparent conductive layer (8) and a second metal electrode (9) are sequentially arranged on the back face of the crystalline silicon layer (1) from inside to outside; and a local reduction layer (10) is formed on the surface of the first transparent conductive layer (4) that is under the first metal electrode (5) and/or on the surface of the second transparent conductive layer (8) that is under the second metal electrode (9). La présente invention concerne une batterie à hétérojonction et son procédé de