期刊
INORGANIC CHEMISTRY
卷 49, 期 20, 页码 9098-9100出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic1011346
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资金
- National Science Foundation [DMR-0801855]
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- NU
The layered compounds RbAg2TeS6 and CsAg2TeS6 crystallize in the noncentrosymmetric space group P6(3)cm, with a = 19;15 angstrom, c = 14.64 angstrom, and V = 4648 angstrom(3) and a = 19.41 angstrom, c = 14.84 angstrom, and V = 4839 angstrom(3), respectively. The structures are composed of neutral [Ag2TeS3] layers alternating with charge-balanced salt layers containing polysulfide chains of [S-6](2-) and alkali-metal ions. RbAg2TeS6 and CsAg2TeS6 are air- and water-stable, wide-band-gap semiconductors (E-g similar to 2.0 eV) exhibiting nonlinear-optical second-harmonic generation.
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