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- Title
Effect of carbon quantum dots and Zn<sup>2+</sup> ion on perovskite solar cells.
- Authors
Hussien, Hadeer; Ghatass, Zekry; Hassan, M. S.; Soliman, Moataz; Ebrahim, Shaker
- Abstract
Perovskite solar cells (PSCs) have a great attention due to their remarkable performance and a high-quality perovskite film is necessary to achieve high power conversion efficiency (PCE). The effect of carbon quantum dots (CQDs) and Zn2+ ions on perovskite layer of methyl ammonium lead iodide (MAPbI3) was investigated. The optical, structural, and morphological properties of perovskite films with different Zn2+ ratios and CQDs contents were investigated. It was observed that 1% ZnCl2 /0.05 mg/mL CQDs perovskite film composed of uniform grains distribution, complete surface coverage with negligible pinholes, and a larger grain size of 1.8 μm. In addition, it was found that increasing CQDs contents to 0.1 and 0.25 mg/mL enlarged the grain size to ~ 4.2 μm. Moreover, the incorporation of CQDs enhanced crystallinity and grain size. Consequently, these improvements were reflected on the solar cell performance and the efficiency of PSCs with additive of 1% ZnCl2-0.05 mg/mL CQDs was improved from 4.21 to 8.08%.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 21, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-10907-8