Throughout this section, the indexing of the materials refers to their index in their respective CSV files. The top three pairs discovered in GA 4 are acceptor A0 and donor D0, with a PCE of 21.2%, A0 and D2 with a PCE of 21.0%, and A1 and D4 with a PCE of 20.9%. All three pairs exhibit strong absorption across the visible and near-IR regions. To broaden this absorption range, the GA aims to find materials that can absorb strongly in the remaining regions. GAs 5, 6, and 7 use these top three pairs as target front subcells and find pairs that optimize spectral absorption. GA 5 found the best pair for the rear subcell that maxi-mized absorption to be A660 and D873 (Fig. ). The PCE of this pair was predicted after completion of the GA using OPEP2 to be 16.3%. GA 6 discovered that A523 and D698 give the best complementary properties, with a PCE of 18.3%. GA 7 determined that A660 and D873, with a PCE of 16.3%, are the most compatible with the front cell materials. The material combinations were selected based primarily on its optical properties, and yet analysis of the PCE of these new combinations show high performance. This is evidence for the success of this pipeline GA strategy in solving complex optimization problems. All selected acceptors contain the norbenyl fused 3D terminal group, probably optimizing the charge transport properties in the morphology. A0 and A1 are Y-series NFAs, with both strongly absorbing in the 200-550 nm region. The complementary acceptors for the subcells were selected to be unfused acceptors, with the primary unit containing diphenylamines. These NFAs showed strong broad absorption across the visible and near-IR regions, indicating a promising design motif. Donors selected for front subcells, such as D0, D2, and D4, show strong absorption in the high-energy visible and UV regions. This is most likely due to the BDT motif found in all three donors.