| Autor: |
Laing, Craig C., Kim, Daehan, Park, Jinu, Shen, Jiahong, Hadar, Ido, Hoffman, Justin M., He, Jiangang, Shin, Byungha, Wolverton, Chris, Kanatzidis, Mercouri G. |
| Zdroj: |
Nature Materials; February 2024, Vol. 23 Issue: 2 p230-236, 7p |
| Abstrakt: |
Rhenium chalcohalide cluster compounds are a photoluminescent family of mixed-anion chalcohalide cluster materials. Here we report the new material Rb6Re6S8I8, which crystallizes in the cubic space group Fm3̅mand contains isolated [Re6S8I6]4−clusters. Rb6Re6S8I8has a band gap of 2.06(5) eV and an ionization energy of 5.51(3) eV, and exhibits broad photoluminescence (PL) ranging from 1.01 eV to 2.12 eV. The room-temperature PL exhibits a PL quantum yield of 42.7% and a PL lifetime of 77 μs (99 μs at 77 K). Rb6Re6S8I8is found to be soluble in multiple polar solvents including N,N-dimethylformamide, which enables solution processing of the material into films with thickness under 150 nm. Light-emitting diodes based on films of Rb6Re6S8I8were fabricated, demonstrating the potential for this family of materials in optoelectronic devices. |
| Databáze: |
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