Publication Type : Journal Article
Publisher : ACS Applied Energy Materials
Source : ACS Applied Energy Materials Vol. 5, 4, pp. 3926-3932 February 2022
Url : https://pubs.acs.org/doi/10.1021/acsaem.1c03598
Campus : Chennai
School : School of Engineering
Department : Electronics and Communication
Year : 2022
Abstract : Herein, we synthesized Sb-based single crystals (SCs) of Cs2AgSbCl6 with an impressive low bandgap of ∼1.82 eV and demonstrated the effect of strain on optical properties. Interestingly, the polycrystalline ground powder and the heated SCs of Cs2AgSbCl6 exhibited a larger bandgap of ∼2.55 eV. The reduction of bandgap is attributed to the existence of strain in the SC as confirmed by X-ray diffraction and Raman spectroscopy and supported by density functional theory (DFT) calculations. The strain engineering for bandgap reduction can play a pivotal role for developing low-bandgap lead-free double perovskite for environmentally friendly solar cell applications.
Cite this Research Publication : A. Singh, R. Chaurasiya, A. Bheemaraju, J. S. Chen, and S. Satapathi. "Strain-Induced Band-Edge Modulation in Lead-Free Antimony-Based Double Perovskite for Visible-Light Absorption." ACS Applied Energy Materials Vol. 5, 4, pp. 3926-3932 February 2022