Due to the matching energy level of CsPbI3 quantum dots and perovskite layer, the efficiency of perovskite solar cells was substantially enhanced from 15.17% to 18.56% by introducing CsPbI3 quantum dots as interface engineering layer. Moreover, perovskite solar cells with CsPbI3 QDs maintained 82% of its initial performance for 30 days at over 30% RH without any encapsulation.
- Chang Liu
- Manman Hu
- Chun Cheng
