Abstract
The new compounds ANb2PSe10, where A = K, Rb and Cs, form from polyselenophosphate flux reactions and crystallize in the noncentrosymmetric space group Pc. They feature infinite one-dimensional 1/-[Nb2PSe10-] chains separated by alkali cations. The chains consist of [Nb2(Se2)2]4+ clusters bridged by a diselenide and a [PSe4]3- group. The chains pack differently depending on which alkali cation is present in the lattice. As a result, the analogs are not isostructural with respect to each other, and each has a different unit cell. The reaction chemistry involving a multitude of reaction conditions and their respective products is discussed. Other products from these reactions include NbSe3 and Nb2Se9 in both crystalline and microfibrous morphologies. The ANb2PSe10 compounds are stable to oxidation in ambient air but decompose when heated above 350 °C. Their band gaps were measured to be 1.1-1.2 eV and the resistivity of the K analog at room temperature was measured at 4.5 ω·cm. Nonlinear optical second harmonic generation measurements were done on the Rb analog yielding a χ2 of ∼7 pm/V and showing phase matching behavior.
| Original language | English |
|---|---|
| Pages (from-to) | 255-265 |
| Number of pages | 11 |
| Journal | Chemistry of Materials |
| Volume | 27 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 13 2015 |
Fingerprint
ASJC Scopus subject areas
- Materials Chemistry
- Chemical Engineering(all)
- Chemistry(all)
Cite this
Semiconducting properties and phase-matching nonlinear optical response of the one-dimensional selenophosphates ANb2PSe10 (A = K, Rb, and Cs). / Syrigos, Jonathan C.; Clark, Daniel J.; Saouma, Felix O.; Clarke, Samantha M.; Fang, Lei; Jang, Joon I.; Kanatzidis, Mercouri G.
In: Chemistry of Materials, Vol. 27, No. 1, 13.01.2015, p. 255-265.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Semiconducting properties and phase-matching nonlinear optical response of the one-dimensional selenophosphates ANb2PSe10 (A = K, Rb, and Cs)
AU - Syrigos, Jonathan C.
AU - Clark, Daniel J.
AU - Saouma, Felix O.
AU - Clarke, Samantha M.
AU - Fang, Lei
AU - Jang, Joon I.
AU - Kanatzidis, Mercouri G
PY - 2015/1/13
Y1 - 2015/1/13
N2 - The new compounds ANb2PSe10, where A = K, Rb and Cs, form from polyselenophosphate flux reactions and crystallize in the noncentrosymmetric space group Pc. They feature infinite one-dimensional 1/-[Nb2PSe10-] chains separated by alkali cations. The chains consist of [Nb2(Se2)2]4+ clusters bridged by a diselenide and a [PSe4]3- group. The chains pack differently depending on which alkali cation is present in the lattice. As a result, the analogs are not isostructural with respect to each other, and each has a different unit cell. The reaction chemistry involving a multitude of reaction conditions and their respective products is discussed. Other products from these reactions include NbSe3 and Nb2Se9 in both crystalline and microfibrous morphologies. The ANb2PSe10 compounds are stable to oxidation in ambient air but decompose when heated above 350 °C. Their band gaps were measured to be 1.1-1.2 eV and the resistivity of the K analog at room temperature was measured at 4.5 ω·cm. Nonlinear optical second harmonic generation measurements were done on the Rb analog yielding a χ2 of ∼7 pm/V and showing phase matching behavior.
AB - The new compounds ANb2PSe10, where A = K, Rb and Cs, form from polyselenophosphate flux reactions and crystallize in the noncentrosymmetric space group Pc. They feature infinite one-dimensional 1/-[Nb2PSe10-] chains separated by alkali cations. The chains consist of [Nb2(Se2)2]4+ clusters bridged by a diselenide and a [PSe4]3- group. The chains pack differently depending on which alkali cation is present in the lattice. As a result, the analogs are not isostructural with respect to each other, and each has a different unit cell. The reaction chemistry involving a multitude of reaction conditions and their respective products is discussed. Other products from these reactions include NbSe3 and Nb2Se9 in both crystalline and microfibrous morphologies. The ANb2PSe10 compounds are stable to oxidation in ambient air but decompose when heated above 350 °C. Their band gaps were measured to be 1.1-1.2 eV and the resistivity of the K analog at room temperature was measured at 4.5 ω·cm. Nonlinear optical second harmonic generation measurements were done on the Rb analog yielding a χ2 of ∼7 pm/V and showing phase matching behavior.
UR - http://www.scopus.com/inward/record.url?scp=84921371013&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921371013&partnerID=8YFLogxK
U2 - 10.1021/cm5038217
DO - 10.1021/cm5038217
M3 - Article
AN - SCOPUS:84921371013
VL - 27
SP - 255
EP - 265
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 1
ER -