New Crystalline Phase in Thin Lead Sulfide Films

被引：26

作者：

Sadovnikov, S. I. ^{[1
]}

Gusev, A. I. ^{[1
]}

Rempel', A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620041, Russia

来源：

JETP LETTERS | 2009年 / 89卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

CDS NANOPARTICLES; SIZE; PHYSICS; PBS;

D O I：

10.1134/S0021364009050051

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The crystal structure of thin lead sulfide (PbS) films fabricated by hydrochemical deposition is studied by X-ray diffraction analysis. It is established that both the synthesized PbS films and the same films annealed in the temperature interval of 293-423 K have a cubic (space group Fm (3) over bar m) crystal structure different from the B1-type structure. In this structure, sulfur (S) atoms are located not only in positions 4(b) (octahedral interstices of the face-centered sublattice of lead (Pb) atoms) but also in positions 8(c), i.e., in tetrahedral interstices. The occupations of positions 4(b) and 8(c) by S atoms are similar to 0.84 and similar to 0.08, respectively. Long-range order in the location of S atoms in positions of each type is absent, but correlations may be present. The new revealed structure of PbS films remains stable under a prolonged annealing in the temperature interval from 293 to 423 K.

引用

页码：238 / 243

页数：6

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