1977
DOI: 10.1039/dt9770000906
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Mössbauer and electronic-reflectance spectroscopic studies and resistivity measurements on the systems CsPb1–xSnxBr3, CsPb1–xSnxBr2Cl, MxCs1–xSnBr3, and MxCs1–xSnBr2Cl (M = Na, K, Rb, and NH4)

Abstract: A series of coloured compounds of general formula CsPb,-,Sn,X, (X, = Br, or Br,CI) has been prepared. X-Ray and Mossbauer data show that the compounds have highly symmetrical tin-lead environments. Their electronic resistivity and optical-reflectance spectra are interpretable in terms of the partial filling of electronic bands produced by the interaction of orbitals of the bromine atoms, As x increases the band population increases, consistent with the lower ionisation energies of the tin 5s electrons compared… Show more

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Cited by 13 publications
(10 citation statements)
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“…Die in den meisten Fällen anzutreffende Liganden Verteilung niederer Symmetrie kann mit der Mischung von s-und p-Valenzzuständen erklärt werden [2], Eines dieser seltenen Beispiele mit stereochemisch inaktiven ns 2 -Elektronen ist das schwarze, im kubischen Perowskitgitter kristallisierende CsSnBr3 [3,4], das sich im Gegensatz zu den übrigen Alkali-Zinn(II)-Halogeniden durch intensive Eigenfarbe und elektrische Leitfähigkeit auszeichnet [5,6], Das Sn(II)-Ion ist hier streng oktaedrisch von den Anionen umgeben.…”
unclassified
“…Die in den meisten Fällen anzutreffende Liganden Verteilung niederer Symmetrie kann mit der Mischung von s-und p-Valenzzuständen erklärt werden [2], Eines dieser seltenen Beispiele mit stereochemisch inaktiven ns 2 -Elektronen ist das schwarze, im kubischen Perowskitgitter kristallisierende CsSnBr3 [3,4], das sich im Gegensatz zu den übrigen Alkali-Zinn(II)-Halogeniden durch intensive Eigenfarbe und elektrische Leitfähigkeit auszeichnet [5,6], Das Sn(II)-Ion ist hier streng oktaedrisch von den Anionen umgeben.…”
unclassified
“…The coating thickness was ca. 5 mg cm 22 . The coated Al stubs were then placed into a chamber, which was evacuated to a pressure of ca.…”
Section: Methodsmentioning
confidence: 99%
“…For a band model, we turn to recent work by Blasse and coworkers 9 who proposed a model to explain the electronic band structure for b-Bi(Nb/Ta)O 4 justi®ed from known crystal structural data. The reasonable assumption is made that the 6s 2 valence band levels lie just above the 2p(O 22 ) valence band levels. Absorption transitions are determined by the 6s 2 ±4d/5d transition, which takes place at lower energy than the 2p±4d/5d charge-transfer transition.…”
Section: Effect Of Crystal Structurementioning
confidence: 99%
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