| 초록 |
The luminescent down-shifting (LDS) layer can transform the high energy photons to visible ones. To meet the requirements of luminophores in LDS, high photoluminescence quantum yield and strong photostability are necessary. We demonstrate full-colored, opaque PV modules with LDS layers of structurally-engineered, eco-friendly InP/ZnSeS QDs. The Se rich and thick shell allows the enhanced absorption in the UV region and improved PL QY of QDs. Furthermore, the surface ligand engineering improves the stability of LDS layer after the damp heat test. With the beneficial effects of QD-LDS layers, commercial CIGS and c-Si PV modules exhibit 40% efficiency enhancement in the UV regions and wide color tunability. We believe this integrated approach will contribute to the realization of opqaue PV modules with aesthetically appeal. |
