Estimation of conversion efficiency for partially static concentrator with III-V on Si solar cell

We estimated the annual mean conversion efficiency of partially static concentrator (PSC) module. The PSC module consistes of static concentrator, small III-V top solar cell and large Si bottom solar cell. The large Si bottom solar cell absorbes the solar power that is not collected by the III-V top soler cell. The mean optical efficiency decreased with the increase of concentration ratio. The decreasing ratio of mean optical efficiency between 1X to 4X was 49.9%. By using PSC module structure, it was possible to boost the annually mean conversion efficiency. The decreasing ratio of annually mean conversion efficiency between 1X to 4X was 21.5%. The acceptance angle of conversion efficiency was larger than that of optical efficiency. The PSC module structure also improved acceptance angle of the conversion efficiency.