| 초록 |
Here, we demonstrate a high performance and high reliability photodiode by using cubic phase stabilized CsPbI3 perovskite nanocrystals as a photo-active layer. Because of high electrical and optical characteristics of the perovskite material, cubic phase stabilized CsPbI3 perovskite nanocrystals photodiode show hysteresis-free and high detectivity. To further minimize interface defects of perovskite layer, a poly (3-hexylthiophene) layer was strategically introduced as a defect passivation and electron blocking layer. Consequently, the high specific detectivity over 1.0 × 1012 Jones are observed with near-zero hysteresis. Furthermore, the optimized photodiode exhibits excellent stability under high humidity conditions because of the defect tolerant α-CsPbI3 perovskite NCs and defect passivation layer. |
