| Autor: |
Khan, M. I., Mujtaba, Ali, Hussain, Saddam, Hussain, Asif, Bulayis N AlResheedi, Dalil, Elqahtani, Zainab Mufarreh, Yousef, El Sayed, Alwadai, Norah |
| Předmět: |
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| Zdroj: |
New Journal of Chemistry; 4/28/2024, Vol. 48 Issue 16, p7205-7212, 8p |
| Abstrakt: |
Metal halide perovskites, particularly the cesium lead iodide bromide (CsPbIBr2) composition, have become more and more popular in solar applications because of their remarkable optoelectronic properties. Although recombination losses and stability problems still exist, CsPbIBr2 is a potential option with a bandgap of about 2.0 eV. This work aims to investigate the doping of CsPbIBr2 with chromium (Cr) to overcome these difficulties. According to the results of ultraviolet-visible spectroscopy (UV-vis), X-ray diffraction (XRD), and current–voltage (J–V) analyses, the structural, optical, and electrical properties of perovskite films doped with Cr are improved. Quantum size effects may be responsible for the observed bandgap drop (2.20 to 2.03 eV) when the crystal size increases (43.6–62.5 nm). Electronic band structures change, which in turn affects the bandgap energy of the material, as the size of the crystal becomes larger and the confinement of electrons shrinks. The Cr–CsPbIBr2 device produces 12.06% efficiency as compared to 9.64% for pure CsPbIBr2, which is a ground-breaking step towards safer and more effective perovskite solar cells. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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