Abstract: A solar cell includes a crystalline silicon semiconductor substrate, an intrinsic amorphous silicon semiconductor layer, an amorphous silicon semiconductor layer and a transparent conductive layer. The crystalline silicon semiconductor substrate possesses a first doped type and a trench is formed thereon to form an enclosed area to define a first electrode region in the enclosed area and a second electrode region out of the enclosed area. The intrinsic amorphous silicon semiconductor layer, the amorphous silicon semiconductor layer and the transparent conductive layer are formed sequentially on the crystalline silicon semiconductor substrate and in the trench. Having discontinuity in the trench, the amorphous silicon semiconductor layer, the amorphous silicon semiconductor layer and the transparent conductive layer provide an isolation function between the previously defined first and second electrode regions.

Abstract: A solar cell includes a crystalline silicon semiconductor substrate, an intrinsic amorphous silicon semiconductor layer, an amorphous silicon semiconductor layer and a transparent conductive layer. The crystalline silicon semiconductor substrate possesses a first doped type and a trench is formed thereon to form an enclosed area to define a first electrode region in the enclosed area and a second electrode region out of the enclosed area. The intrinsic amorphous silicon semiconductor layer, the amorphous silicon semiconductor layer and the transparent conductive layer are formed sequentially on the crystalline silicon semiconductor substrate and in the trench. Having discontinuity in the trench, the amorphous silicon semiconductor layer, the amorphous silicon semiconductor layer and the transparent conductive layer provide an isolation function between the previously defined first and second electrode regions.

Abstract: An electronic device, which is capable of multidirectional rotation, includes a connecting unit, which has a connecting portion at one end detachably connectable to an external electronic device and a spherical ball socket at an opposite end, and a body unit having a housing and an electronic circuit assembly mounted inside the housing. The housing has a coupling structure that receives the spherical ball socket for allowing rotation of the spherical ball socket relative to the housing.