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(Ag2TeS3)2•A2S6 (A = Rb, Cs): Layers of Silver Thiotellurite Intergrown with Alkali-Metal Polysulfides
- Nguyen, Sandy L.;
- Jang, Joon I.;
- Ketterson, John B.;
- Kanatzidis, Mercouri G.
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29초록
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.
키워드
CRYSTAL-STRUCTURE; CHALCOGENIDES; TELLURIDES; ANION; SALT; LI; NA
- 제목
- (Ag2TeS3)2•A2S6 (A = Rb, Cs): Layers of Silver Thiotellurite Intergrown with Alkali-Metal Polysulfides
- 저자
- Nguyen, Sandy L.; Jang, Joon I.; Ketterson, John B.; Kanatzidis, Mercouri G.
- 발행일
- 2010-10-18
- 유형
- Article
- 권
- 49
- 호
- 20
- 페이지
- 9098 ~ 9100