Unknown

Dataset Information

0

Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application.


ABSTRACT: Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI2Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can induce strong binding between molecules of the CsPbI2Br precursor solution and phosphorus atoms stemming from the concomitant reduction in coulombic repulsion. The four-phase transition during the annealing process yields an α-phase CsPbI2Br stabilized by BPQDs. The BPQDS/CsPbI2Br core-shell structure concomitantly reinforces a stable CsPbI2Br crystallite and suppresses the oxidation of BPQDs. Consequently, a power conversion efficiency of 15.47% can be achieved for 0.7 wt % BPQDs embedded in CsPbI2Br film-based devices, with an enhanced cell stability, under ambient conditions. Our finding is a decisive step in the exploration of crystallization and phase stability that can lead to the realization of efficient and stable inorganic perovskite solar cells.

SUBMITTER: Gong X 

PROVIDER: S-EPMC7148097 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC6265047 | biostudies-literature
| S-EPMC5399305 | biostudies-literature
| S-EPMC7509833 | biostudies-literature
| S-EPMC7887870 | biostudies-literature
| S-EPMC9727127 | biostudies-literature
| S-EPMC7689956 | biostudies-literature
| S-EPMC6145272 | biostudies-literature
| S-EPMC4092025 | biostudies-other
| S-EPMC9418115 | biostudies-literature
| S-EPMC5990368 | biostudies-literature