Stability of Cs 2 NaBiBr 6 and Cs 2 NaBiCl 6 .
- Resource Type
- Academic Journal
- Authors
- Tran MN; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.; Rodriguez RS; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.; Geniesse JR; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.; Sandrakumar K; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.; Cleveland IJ; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.; Aydil ES; Department of Chemical & Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.
- Source
- Publisher: American Chemical Society Country of Publication: United States NLM ID: 0366543 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-510X (Electronic) Linking ISSN: 00201669 NLM ISO Abbreviation: Inorg Chem Subsets: MEDLINE
- Subject
- Language
- English
Bismuth-based halide perovskites are nontoxic alternatives to widely studied lead-based perovskites for optoelectronic applications. Here, we synthesized Cs 2 NaBiCl 6 thin films and attempted to synthesize Cs 2 NaBiBr 6 using physical vapor deposition. While Cs 2 NaBiCl 6 forms a stable cubic structure with a 3.4 eV band gap and could be synthesized successfully, Cs 2 NaBiBr 6 does not form and is unstable with respect to dissociation into Cs 3- x Na x Bi 2 Br 9 and Cs 3- x Na x BiBr 6 . Furthermore, the close X-ray diffraction patterns of Cs 3- x Na x Bi 2 Br 9 and Cs 2 NaBiBr 6 raise doubts about the previous reports of the latter's formation based on X-ray diffraction alone.