在BaNaH3X (X = Ni,Pd,Pt) 矿化物中调整光电子特性:基于DFT的分析
Abdelmounaim Laassouli1, Mohamed Karouchi2, Abdelkebir Ejjabli2
1Laboratory of Engineering in Chemistry and Physics of Matter (LICPM), Faculty of Sciences and Technics, Sultan Moulay Slimane University, BP 523, 23000, Beni Mellal, Morocco. abdelmounaim.laassouli@gmail.com.
Journal of molecular modeling
|January 13, 2026
概括
有,或的化和化的化呈现出可调节的光电学性能. BaNaH3Ni提供了良好的光收获,而BaNaH3Pd和BaNaH3Pt对紫外线/可见应用有希望.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学的计算化学
- 固态物理 固态物理
背景情况:
- 矿化物是光电子和技术的新兴材料.
- 矿化物中的B位置换是调整其功能性质的关键策略.
- 这项研究侧重于BaNaH3X (X = Ni,Pd,Pt),以了解结构-属性关系.
研究的目的:
- 研究10组元素替代 (Ni,Pd,Pt) 对BaNaH3.3的特性的影响.
- 澄清这些替换如何影响光收获和负载运输特征.
- 评估它们在光电子应用中的潜力.
主要方法:
- 第一个原则密度函数理论 (DFT) 使用CASTEP进行计算.
- 使用GGA-PBE和HSE06混合功能进行结构优化和属性计算.
- 分析带间隙,带分散,载波有效质量和光学特性.
主要成果:
- 预计这三种化合物 (BaNaH3Ni,BaNaH3Pd,BaNaH3Pt) 在六边形P63/mmc阶段稳定,格子参数从Ni增加到Pt.
- 带间隙范围从1.43 eV (BaNaH3Ni) 到2.51 eV (BaNaH3Pd) 和2.43 eV (BaNaH3Pt),对于Pd和Pt化合物而言,带分散和载体移动性得到了改进.
- 计算的光学特性显示,在太阳光谱中,可见紫外线吸收强,折射率高,反射率低.
结论:
- BaNaH3Ni具有适用于高指数化物应用的性能.
- 确定了BaNaH3Pd和BaNaH3Pt作为UV/可见光电子设备的有希望的候选者.
- B位置换提供了一个可行的途径,可以为特定的技术应用量身定制矿化物特性.
更多相关视频
13:56Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
8.0K
11:38Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
19.0K
相关概念视频
02:42Valence Bond Theory
11.2K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.2K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
48.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.1K