Synthesis and Characterization of Nanostructured Wurtzite CuInS2: A New Cation Disordered Polymorph of CuInS2

被引：143

作者：

Qi, Yunxia ^{[1
,2
]}

Liu, Qiangchun ^{[1
,2
,3
]}

Tang, Kaibin ^{[1
,2
]}

Liang, Zhenghua ^{[1
,2
]}

Ren, Zhibiao ^{[2
]}

Liu, Xianming ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

[3] Huaibei Coal Ind Teachers Coll, Dept Phys, Huaibei 235000, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ONE-POT SYNTHESIS; THIN-FILMS; SINGLE-CRYSTALS; SOLAR-CELLS; SEMICONDUCTOR; NANOCRYSTALS; TRANSITION; FABRICATION; GROWTH; SHAPE;

D O I：

10.1021/jp807987t

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new wurtzite (WZ) structure CuInS2, space group P6(3)mc, a = 3.90652(13) angstrom, c = 6.42896(23) angstrom, has been synthesized by a one-step solvothermal method. Analogous with the disordered zinc-blende structure, wurtzite structure is metastable at room temperature and considered as a disordered polymorph of chalcopyrite (CH) structure, where Cu and In atoms randomly occupy the cation sublattice positions. It is believed that the solvent of ethanolamine plays an important role in the synthesis of WZ-CuInS2. The coordination between Cu2+ and -NH2 of ethanolamine molecules favors the nucleation and growth of WZ-CuInS2. Differential scanning calorimeter, together with X-ray diffraction analysis, revealed a phase transition from WZ-CuInS2 to CH-CuInS2 when WZ-CuInS2 was heated to certain temperature. The visible and near-infrared absorption spectra show that the as-prepared nanostructured WZ-CuInS2 has distinct optical properties compared with conventional CH-CuInS2.

引用

页码：3939 / 3944

页数：6