CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims all benefits accruing under 35 U.S.C. § 119 from China Patent Application No. 201911090236.8, filed on Nov. 8, 2019, in the China Intellectual Property Office, the contents of which are hereby incorporated by reference. The application is also related to co-pending applications entitled, “LIGHT EMITTING DIODE”, filed Jun. 16, 2020 Ser. No. 16/903,164. The application is also related to co-pending applications entitled, “SEMICONDUCTOR STRUCTURE AND SEMICONDUCTOR DEVICE USING THE SAME”, filed Jun. 16, 2020 Ser. No. 16/903,171. The application is also related to co-pending applications entitled, “PHOTOELECTRIC DETECTOR”, filed Jun. 16, 2020 Ser. No. 16/903,161.

FIELD

The present disclosure relates to a solar battery.

BACKGROUND

Solar batteries are made using photovoltaic principle of semiconductor materials. According to the types of semiconductor photoelectric conversion materials, solar batteries can be classified into silicon-based solar batteries, gallium arsenide solar batteries, and organic thin-film solar batteries. Currently, solar batteries are mainly silicon-based solar batteries.

Conventional materials of an upper electrode and a back electrode of a solar battery are mostly metal, conductive polymer, or indium tin oxide. However, light can be absorbed or reflected seriously by metal, conductive polymer, or indium tin oxide; as such, a photoelectric conversion efficiency of conventional solar batteries is limited.

