Details

Autor(en) / Beteiligte

• Khan, M. I
• Mujtaba, Ali
• Hussain, Saddam
• Hussain, Asif
• Bulayis N AlResheedi, Dalil
• Elqahtani, Zainab Mufarreh
• Yousef, El Sayed
• Alwadai, Norah

Titel

Impact of Cr doping on the structural and optoelectronic properties of a CsPbIBr perovskite solar cell

Ist Teil von

• New journal of chemistry, 2024-04, Vol.48 (16), p.725-7212

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Metal halide perovskites, particularly the cesium lead iodide bromide (CsPbIBr 2 ) composition, have become more and more popular in solar applications because of their remarkable optoelectronic properties. Although recombination losses and stability problems still exist, CsPbIBr 2 is a potential option with a bandgap of about 2.0 eV. This work aims to investigate the doping of CsPbIBr 2 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-CsPbIBr 2 device produces 12.06% efficiency as compared to 9.64% for pure CsPbIBr 2 , which is a ground-breaking step towards safer and more effective perovskite solar cells. The Cr-CsPbIBr 2 device showed enhanced performance, with increased grain size, reduced energy band gap, and elevated efficiency from 9.64% to 12.06%.