Zn2+ and Cu2+ doping of one-dimensional lead-free hybrid perovskite ABX3 for white light emission and green solar cell applications

H. Jellali (1) , R. Msalmi (1) , H. Smaoui (1) , S. Elleuch (1) , A. Tozri (2) , Thierry Roisnel (3) , E. Mosconi (4) , N.A. Althubiti (2) , H. Naïli (1)

1 FSS - Faculté des Sciences de Sfax
2 Jouf University
3 ISCR - Institut des Sciences Chimiques de Rennes
4 SCITEC - Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”

The one-dimensional ABX3 hybrid perovskite (A=(CH3)2NH2=DMA, B=Cd and X=Cl) was synthesized and structurally characterized. The optical analysis showed that the material has a direct band-gap nature with a gap energy of 5.36 eV. The obtained compound exhibited a “cold” white-light emission under an excitation wavelength of 240 nm with a color-rendering index up to 92 and a correlated color temperature (CCT) of 7582 K. The doping of the crystal with Cu2+ ions decreased the gap energy toward 2.51 eV. The partial substitution of the Cd atoms with Cu atoms decreased the intensity of the emitted white-light under 240 nm and led to a “cold” white-light emission with a CCT of 7117 K. The doping of the material with Zn2+ yielded a blue-shift and the emitted light revealed a CCT of 11,028 K. On the other hand, by incorporating Cu2+ions into the B site a broad absorption band is observed in the visible region resulting from the d-d transitions around the copper atoms which makes the material a good visible-light absorber. Hence, the Cu doped compound could be suitable for both white-light emission and photovoltaic solar cells.

Mots clés: A. optical materials; B. crystal growth; B. luminescence; B. optical properties; D. electronic structure

Domaines: Chimie

H. Jellali, R. Msalmi, H. Smaoui, S. Elleuch, A. Tozri, et al.. Zn2+ and Cu2+ doping of one-dimensional lead-free hybrid perovskite ABX3 for white light emission and green solar cell applications. Materials Research Bulletin, 2022, 151, pp.111819. ⟨10.1016/j.materresbull.2022.111819⟩. ⟨hal-03632816⟩