A Simple Method to Produce an Aluminum Oxide-Passivated Tungsten Diselenide/n-Type Si Heterojunction Solar Cell with High Power Conversion Efficiency

Figure 2

(a) A schematic and (b) a photograph of the solar cell device structure. (c) A high-resolution TEM image, (d) a HAADF-STEM image, and (e) W, (f) Se, and (g) Si EDX elemental mapping images of the WSe₂/Si heterojunction.

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