论文标题
碘插入HFS $ _2 $的激发发光
Excitonic luminescence of iodine-intercalated HfS$_2$
论文作者
论文摘要
据报道，从化学蒸气传输方法生长的大量HFS $ _2 $的光致发光。在1.4-1.5 eV的能量范围内，在低温下，一系列发射线显然是显而易见的。使用经典的强度相关分析区分了两组观察到的激子转变，然后是涉及声和光子声子的复制品。排放归因于绑定到碘（I $ _2 $）分子的激子的重组，在HFS $ _2 $之间插入的分子。 I $ _2 $分子在生长过程中作为卤素传输剂在生长过程中引入了晶体。它们在晶体中的存在通过次级离子质谱证实。
Photoluminescence from bulk HfS$_2$ grown by the chemical vapor transport method is reported. A series of emission lines is apparent at low temperature in the energy range of 1.4 - 1.5 eV. Two groups of the observed excitonic transitions followed by their replicas involving acoustic and optical phonons are distinguished using classical intensity correlation analysis. The emission is attributed to the recombination of excitons bound to iodine (I$_2$) molecules intercalated between layers of HfS$_2$. The I$_2$ molecules are introduced to the crystal during the growth as halogen transport agents in the growth process. Their presence in the crystal is confirmed by secondary ion mass spectroscopy.
