Enhanced performance of a solar cell based on a layer-by-layer self-assembled luminescence down-shifting layer of core-shell quantum dots Project supported by the Natural Science Foundation of Shandong Province, China (Grant No. ZR2017PF011), the National Natural Science Foundation of China (Grant No. E020701), and the Doctoral Scientific Research Foundation of Binzhou University, China (Grant No. 2014Y10). |
(color online) (a) Absorption and (b) PL spectra of ZnSe/ZnS–COOH and ZnSe/ZnS–NH2 QDs; (c) PL and (d) absorption spectra of different bilayers (5 BL, 10 BL, 15 BL, 20 BL, and 30 BL), respectively. |