| 초록 |
Although organic/inorganic hybrid metal halide perovskite solar cells have high power conversion efficiency over 25 % at 1 sun, they still have poor thermal stability to find commercial applications. Therefore, all inorganic metal halide perovskite solar cells have been of great interest as promising candidate to solve such weak thermal stabilities of hybrid metal halide perovskite materials. In parallel, the material cost is also big obstacle to realize high efficiency and low cost perovskite solar cells because the hole transporting materials are relatively very expensive. In this regard, here we would like to report on highly efficient and thermally stable inorganic CsPbI2Br mesoscopic metal halide perovskite solar cells with relatively cheap poly-3-hexylthiophene (P3HT) hole transporting layer with 7.56 % of degradation after 1000h under 100 oC/25 % RH and 1 sun light soaking condition. |
