The two-phase region in 2(ZnSe)x(CuInSe2)1-x alloys and structural relation between the tetragonal and cubic phases

被引:20
作者
Wagner, G
Lehmann, S
Schorr, S
Spemann, D
Doering, T
机构
[1] Univ Leipzig, Inst Mineral Crystallog & Mat Sci, D-04275 Leipzig, Germany
[2] Univ Leipzig, Fac Phys & Earth Sci, D-04103 Leipzig, Germany
关键词
phase diagram; electron microscopy; ZnSe/CuInSe2; alloys;
D O I
10.1016/j.jssc.2005.09.009
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The two-phase region in the system 2(ZnSe)(x)(CuInSe2)(1-x) covers the chemical composition range 0.10 <x <= 0.36, in which a tetragonal and a Cubic phase are coexisting. The Structural relation between both phases was determined by selected area diffraction (SAD) and transmission electron microscopy (TEM). Both crystal structures are very similar and the extremely small mismatch of the lattice constants of the tetragonal phase and the embedding cubic matrix phase allows for the grain boundaries to be virtually strain-free and, therefore, without notable dislocations. The tetragonal phase forms grains of flat discus-like shape in the ambient Cubic matrix, with the discus axis parallel to the tetragonal c-axis. TEM experiments proved that the discus-shaped tetragonal particles are collinear with the (100)(cub), (010)(cub) and (001)(cub) planes of the cubic phase. Cooling and annealing experiments revealed a near-equilibrium state only to be realized for small cooling rates less than 2 K/h and/or For a long-time annealing With Subsequent rapid quenching. Only then there will be no cation ordering in both, the tetragonal domains and the parental Cubic matrix phase. If, however, the samples are kept in a state far away from the equilibrium condition both phases reveal Stannite-type cation ordering. Within the composition range of 0 <= x <= 0.10 only tetragonal 2(ZnSc)(x)(CuInSe2)(1-x)-alloys exist. At concentration rates above 36 mol% 2(ZnSe) only cubic structured solid solutions of ZnSe and CuInSe2 are found to be stable. However, in the range 36 mol% to about 60 mol% 2(ZnSe) tiny precipitates with Stannite-like structure exist, too. (C) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:3631 / 3638
页数:8
相关论文
共 20 条
[1]  
Bodnar IV, 1998, RUSS J INORG CHEM+, V43, P1783
[2]   Crystal growth and properties of (CuInSe2)x(2ZnSe)1-x solid solutions [J].
Bodnar, IV ;
Gremenok, VF .
INORGANIC MATERIALS, 2003, 39 (11) :1122-1126
[3]  
BODNAR IV, 1997, I PHYS C SER, V152, P119
[4]   ORDER-DISORDER PHASE-TRANSITIONS IN D(2X)(II)(A(I)-B(III))1-XC(2)(VI) ALLOY SYSTEMS [J].
GALLARDO, PG .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1992, 134 (01) :119-125
[5]   OPTICAL-PROPERTIES OF (CUINSE2)1-X-(2ZNSE)X SYSTEM [J].
GAN, JN ;
TAUC, J ;
LAMBRECHT, VG ;
ROBBINS, M .
PHYSICAL REVIEW B, 1975, 12 (12) :5797-5802
[6]   Crystals and Thin Films of Zn2-2xCuxInxSe2 Solid Solutions: Structural and Physical Properties [J].
Gremenok, V. F. ;
Schmitz, W. ;
Bodnar, I. V. ;
Bente, K. ;
Doering, Th. ;
Kommichau, G. ;
Victorov, I. A. ;
Eifler, A. ;
Riede, V. .
JAPANESE JOURNAL OF APPLIED PHYSICS, 2000, 39 (01) :277-278
[7]  
LEHMANN S, 2003, THESIS U LEIPZIG
[8]  
Luck I., 1996, CRYST RES TECHNOL, V31, P841
[9]   PHASE-RELATIONSHIPS, CRYSTAL-GROWTH AND STOICHIOMETRY DEFECTS IN AICIIID2VI/BIIDVI HETEROJUNCTION-FORMING SYSTEMS [J].
MANCA, P ;
GARBATO, L .
SOLAR CELLS, 1986, 16 (1-4) :101-121
[10]  
NEUMANN H, 1981, OPTOELECTRONIC MAT D, P171