Optical properties of triplet states of excitons bound to interstitial-carbon interstitial-oxygen defects in silicon
Optical properties of triplet states of excitons bound to interstitial-carbon interstitial-oxygen defects in silicon
复制标题
硅中与间隙碳间隙氧缺陷结合的激子三重态的光学性质
DOI：
10.1103/physrevb.84.115204
复制
发表时间：
2011
影响因子：
3.7
通讯作者：
L.S.Vlasenko
中科院分区：
文献类型：
--
作者：
T.Ishikawa;K.Koga;T.Itahashi;K.M.Itoh;L.S.Vlasenko
报道了硅中间隙碳氧复合物（C-O）上激子自旋三重态的光致发光。新的发光峰Cline出现在低于已知的C-O单重态的非声子跃迁发光的能量处，位于（C线）。与克莱恩和C和C线之间的相对强度的温度依赖性的局部振动模式的观测导致明确的识别克莱恩作为非声子线从C-O缺陷。此外，Cline的主体硅同位素位移与C线的主体硅同位素位移相等，表明Cline也是非声子发光。此外，我们在磁场中进行的光致发光测量表明，克莱因是与各向同性自旋三重态由于组成束缚激子的空穴的轨道角动量的淬灭。
Observation of photoluminescence from spin triplet states of excitons bound to interstitial carbon-oxygen complexes (C-O) in silicon is reported. New luminescence peak labeled as Cline emerges at the energybelow the well-known luminescence from the no-phonon transition of a C-Osinglet state situating at(C line). Observations of local vibrational modes associated with Cline and the temperature dependence of the relative intensity between Cand C lines lead to unambiguous identification of Cline as the no-phonon line from C-Odefects. In addition, the host silicon isotope shift of Cline is equal to that of C line, indicating that Cline is no-phonon luminescence as well. Furthermore, our photoluminescence measurements carried out in magnetic field show that Cline is associated with an isotropic spin triplet state due to quenching of orbital angular momentum of the hole composing the bound exciton.