...
首页> 外文期刊>Optical Materials >Anisotropy of the spectroscopy properties of the wurtz-stannite Cu_2ZngeS_4 single crystals
【24h】

Anisotropy of the spectroscopy properties of the wurtz-stannite Cu_2ZngeS_4 single crystals

机译:纤锌矿型单晶Cu_2ZngeS_4单晶的光谱性质各向异性

获取原文
获取原文并翻译 | 示例
           

摘要

In this study, the near band edge anisotropic optical properties of wurtz-stannite (WS) Cu_2ZngeS_4 single crystals were characterized using polarization-dependent transmittance and electrolyte electroreflec-tance (EER) techniques. Single crystals of Cu_2ZngeS_4 were grown by chemical vapor transport method using iodine as a transport agent. Analysis of absorption spectra revealed indirect allowed transitions for Cu_2ZngeS_4 with the band gaps of 2.02 (2.07) and 2.08 (2.14) eV for E||b and E||a polarization configurations at 300 (10) K. The room-temperature EER spectra in the vicinity of the direct band edge showed anisotropic transitions at around 2.38, 2.44 and 2.45 eV for E||b, E||a and E||c polarizations, respectively. Based on the experimental observations and recent band-structure calculations a plausible band diagram near band edge of WS-Cu_2ZngeS_4 was constructed.
机译:在这项研究中,使用偏振相关的透射率和电解质电反射率(EER)技术表征了纤锌矿型(WS)Cu_2ZngeS_4单晶的近带边各向异性光学特性。以碘为传输剂,通过化学气相传输法生长了Cu_2ZngeS_4单晶。吸收光谱分析表明,Cu_2ZngeS_4的间接允许跃迁在300(10)K下对E || b和E || a极化构型的带隙为2.02(2.07)和2.08(2.14)eV。室温EER光谱对于E || b,E || a和E || c极化,在直接带边缘附近的分别在2.38、2.44和2.45 eV附近表现出各向异性跃迁。基于实验观察和最新的能带结构计算,构建了WS-Cu_2ZngeS_4的能带边缘附近的合理能带图。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号