基本信息
ZnSe是一种浅黄色二元固体化合物,在自然界中很少出现。它可以制成六方和立方晶体结构。硒化锌用作发光二极管和二极管激光器中的蓝色光源。还用作红外激光增益介质和红外光学材料。用碲激活的 ZnSe 在 X 射线和伽马射线探测器中用作闪烁体。 [9]
晶体结构
Fractional Coordinates | Orthogonal Coordinates | |||||||
---|---|---|---|---|---|---|---|---|
Label | Elmt | x | y | z | xor[Å] | yor[Å] | zor[Å] | |
1. | T2 | Se | 0.2500 | 0.2500 | 0.2500 | -0.863 | -1.331 | -1.873 |
2. | T2 | Se | 0.2500 | 0.7500 | 0.7500 | 0.100 | -3.980 | -4.722 |
3. | T2 | Se | 0.7500 | 0.7500 | 0.2500 | -2.657 | -1.164 | -5.453 |
4. | T2 | Se | 0.7500 | 0.2500 | 0.7500 | -3.482 | -4.171 | -2.935 |
5. | T1 | Zn | 0.0000 | 0.0000 | 0.0000 | 0.000 | 0.000 | -0.000 |
6. | T1 | Zn | 0.0000 | 0.5000 | 0.5000 | 0.963 | -2.649 | -2.849 |
7. | T1 | Zn | 0.5000 | 0.5000 | 0.0000 | -1.794 | 0.167 | -3.580 |
8. | T1 | Zn | 0.5000 | 0.0000 | 0.5000 | -2.620 | -2.841 | -1.063 |
9. | T1 | Zn | 1.0000 | 0.0000 | 0.0000 | -5.376 | -0.025 | -1.793 |
10. | T1 | Zn | 1.0000 | 0.5000 | 0.5000 | -4.414 | -2.674 | -4.642 |
11. | T1 | Zn | 0.0000 | 1.0000 | 0.0000 | 1.788 | 0.358 | -5.366 |
12. | T1 | Zn | 0.5000 | 1.0000 | 0.5000 | -0.831 | -2.482 | -6.429 |
13. | T1 | Zn | 1.0000 | 1.0000 | 0.0000 | -3.588 | 0.333 | -7.159 |
14. | T1 | Zn | 0.0000 | 0.0000 | 1.0000 | 0.137 | -5.656 | -0.332 |
15. | T1 | Zn | 0.5000 | 0.5000 | 1.0000 | -1.657 | -5.490 | -3.912 |
16. | T1 | Zn | 1.0000 | 0.0000 | 1.0000 | -5.239 | -5.681 | -2.125 |
17. | T1 | Zn | 0.0000 | 1.0000 | 1.0000 | 1.925 | -5.298 | -5.698 |
18. | T1 | Zn | 1.0000 | 1.0000 | 1.0000 | -3.451 | -5.323 | -7.491 |
使用 Cu Kα 单色源的理论衍射数据。
(m是多重数,N是最大弯曲次数)
ref no. | h | k | l | d(hkl) | 2-Theta | Intensity | I/Imax | m | N |
---|---|---|---|---|---|---|---|---|---|
[ 1] | 1 | 1 | 1 | 3.27219 | 27.2296 | 3.56799e-001 | 100.0 | 8 | 3 |
[ 2] | 0 | 0 | 2 | 2.83380 | 31.5438 | 1.03393e-003 | 0.3 | 6 | 4 |
[ 3] | 0 | 2 | 2 | 2.00380 | 45.2123 | 2.62259e-001 | 73.5 | 12 | 8 |
[ 4] | 1 | 1 | 3 | 1.70885 | 53.5827 | 1.57080e-001 | 44.0 | 24 | 11 |
[ 5] | 2 | 2 | 2 | 1.63610 | 56.1706 | 3.14514e-004 | 0.1 | 8 | 12 |
[ 6] | 0 | 0 | 4 | 1.41690 | 65.8603 | 4.10933e-002 | 11.5 | 6 | 16 |
[ 7] | 1 | 3 | 3 | 1.30024 | 72.6539 | 6.12994e-002 | 17.2 | 24 | 19 |
[ 8] | 0 | 2 | 4 | 1.26731 | 74.8585 | 6.43795e-004 | 0.2 | 24 | 20 |
[ 9] | 2 | 2 | 4 | 1.15689 | 83.4861 | 8.34838e-002 | 23.4 | 24 | 24 |
[ 10] | 1 | 1 | 5 | 1.09073 | 89.8496 | 4.77530e-002 | 13.4 | 32 | 27 |
[ 11] | 0 | 4 | 4 | 1.00190 | 100.4906 | 3.01446e-002 | 8.4 | 12 | 32 |
300 K 时的基本参数
ZnSe薄膜主要通过分子束外延、化学气相沉积、化学气相沉积和真空蒸发等方法制备。电沉积是一种简单、低成本且可行的生产优质薄膜的方法。1
通过化学气相沉积制备的ZeSe薄膜的缓冲层总面积效率高达9.6%(AM 1.5照明下),开路电压为482 mV,短路电流为31.0 mA/cm2,填充因子达到64%。 2
Basic Parameters at 300 K
Crystal structure: | Sphalerite | 3 |
Group of symmetry: | F-43m | 3 |
Number of atoms in 1 cm3: | 4.39*1026 | 3 |
Unit cell volume: | 182.05 Å3 | 3 |
Atoms per unit cell: | 8 | 3 |
Debye temperature: | 339(2) K | 4 |
Density: | 5.266 g/cm3 | 3 |
Dielectric constant (static): | 8.6 | 5 |
Dielectric constant (high frequency): | 5.7 | 5 |
Effective electron masses: | (0.16 ± 0.01)me | 6 |
Effective hole masses: | 0.75 mo | 4 |
Lattice constant: | a = 5.667 Å | 3 |
Optical phonon energy (longitudinal): | 0.0314 eV | 7 |
Conductivity: | n-type | 6 |
温度依赖性
电子浓度与温度的关系图可以在此找到 M. Aven, High Electron Mobility in Zinc Selenide Through Low Temperature Annealing. J. Appl. Phys. 42, 1204 (1971); doi: 10.1063/1.1660167 7
施主和受主
受主: Cu, Ag, Sb 8
浅层施主的电离能 4
Ed(LiI) 15(1) meV T= 4.2 K
Ed(NaI) 16(1) meV
Ed(Al) 26.3 meV
Ed(Ga) 27 meV
Ed(In) 28.1 meV
Ed(F) 29.3 meV
Ed(Cl) 26.1 meV
Ed(I) 30.4 meV
浅层受主的电离能
Ea(Li) 118(2) meV T = 4.2 K
Ea(Na) 98(2) meV
Ea(K) 94(2) meV
Ea(N) 112 meV T = 4.2 K
Ea(P) 80…92 meV T = 4.2 K
Ea(As) 125 meV T = 77 K
Ea(Sb) 69 meV T = 30 K
Ea(Rb) 89(2) meV T = 4.2 K
Ea(Cs) 74(2) meV
Ea(O) 80 meV T = 4 K
Ea(VZn) 218 meV T = 4 K
电气特性
电性能基本参数
Energy gap: 2.81 eV 1
Energy spin-orbital splitting: ∆0 (Γ8v- Γ7v) 0.42 eV T=295 K 4
∆1 (Γ4,5v- Γ6v) 0.20 eV T=300 K 4
Donor concentration: 1016 cm-3 7
Carrier mobility: μn = up to 400 cm2/Vs T=300K 4
μp = 110 cm2/Vs T=300K 4
Intrinsic resistivity: ~1012 Ω cm 9
流动性和霍尔效应
Hall mobility: 530 cm2/ V*s (T=300 K) 9
12,000 cm2/ V*s (T=60 K) 9
Absorption coefficient: 104 cm-1 1
迁移率和迁移率比以及电子霍尔迁移率与温度的关系图可以在以下位置找到:
M. Aven, High Electron Mobility in Zinc Selenide Through Low Temperature Annealing. J. Appl. Phys. 42, 1204 (1971); doi: 10.1063/1.1660167 7
光学特性
折射率:折射率和吸收指数与光子能量的关系图可在 4中找到
热性能
线热膨胀系数: α = 7.4*10-6 K-1 4
热容: Cp = 51.88 J/Mol*K 4
导热系数 κ = 0.19 W K-1 cm-1 T=300K 4
硒化锌的热特性图可在 4中找到
机械性能、弹性常数、晶格振动
基本参数
Bulk modulus: 62.4(7) GPa 4
Density: 5.266 g/cm3 4
弹性常数
Elastic Constants: C11 = 90.3(19) GPa 4
C12 = 53.6(23) Gpa 4
C44 = 39.4(12) Gpa 4
声子频率
VLO(Γ) 7.59 THz T=300 K 4
VTO(Γ) 6.39 THz T=300 K
声子能量
HvLO(Γ1) 30.99 meV 4
HvTO(Γ15) 25.17 meV
HvLA(Γ) 19.8 meV
HvTA(Γ) 8.0 meV
HvLO(X) 27.64 meV
HvTO 25.54 meV
HvLA 23.55 meV
HvLO(L) 27.77 meV
HvTO 25.54 meV
Hv(W3) 24.9 meV
Hv(W1) 18.59 meV
Hv(W’2) 11.53 meV
Hv(W”2) 26.53. meV
Hv(W’4) 14.26 meV
Hv(W”4) 24.61 meV
主要由犹他大学本科生 Jeff Provost 和 Carina Hahn 与 Mike Scarpulla 教授合作开发。 Caitlin Arndt、Christian Robert、Katie Furse、Jash Sayani 和 Liz Lund 也做出了贡献。这项工作得到了美国国家科学基金会材料世界网络计划奖 1008302 的全力支持。这些页面是一项正在进行的工作,我们征求世界各地知识渊博的各方的意见,以获取更准确或更多的信息。请联系 [email protected] 提出此类建议。
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