| 초록 |
The efficiency of previous solar cells has been limited by improper active layer thickness and the refractive index difference at p-n interfaces. In this report, we successfully designed, fabricated, and theoretically simulated PbS CQD solar cells using a textured ZnO layer. The interference effects on PbS CQD solar cells were estimated and analysed both experimentally and theoretically, depending upon active layer thickness. As a result, by removing the interference effect with a textured ZnO layer, the PbS CQD solar cells with active layer thicknesses greater than 400 nm achieved a 25 mA/cm2 Jsc and 11.1% PCE. This results help to reveal the effect of the optical characteristics on the charge carrier extraction efficiency of the entire device. As a basis for future work, this study provides critical insight and a strategy to design efficient emerging solar cells. |
