| 초록 |
Because of greenhouse gases, solar energy is attracting a lot of attention. Among them, Perovskite solar cells (PSCs) are rising in academia due to its high power conversion efficiency (PCE) and low process cost. The issue of PSCs is not only durability to heat or moisture but also higher PCE. One of the ways to achieve higher PCE is to obtain higher short-circuit current (JSC). If we use narrower bandgap materials for PSCs, we can expect higher light harvesting efficiency and make PSC absorbs wider wavelength range of light. Finally, JSC and PCE could be going higher. Surprisingly, the bandgap of Formamidinium lead Iodide (FAPbI3) can be tuned by substituting part of its ions with others. Therefore, we can expect highly efficient PSCs by finding narrower bandgap perovskite materials by this process. |
