Matrixreaktion von SiO mit F2. IR-spektroskopischer nachweis von molekularem OSiF2
作者:H. Schnöckle
DOI:10.1016/0022-2860(80)85184-2
日期:1980.8
Abstract SiO reacts with F 2 , in an argon matrix after photolysis with a high-pressure mercury lamp to form OSiF 2 . Isotopic splitting ( 16 O/ 18 O and 28 Si/ 29 Si) and force constant calculations show that the 6 fundamentals observed can be assigned to the planar molecule OSiF 2 . The value of the force constant of the SiO double bond, which was calculated as approximately 9 × 10 2 N m −1 in earlier
摘要 SiO 在高压汞灯光解后在氩基体中与F 2 反应生成OSiF 2 。同位素分裂( 16 O/ 18 O 和 28 Si/ 29 Si)和力常数计算表明,观察到的 6 个基本原理可以分配给平面分子 OSiF 2 。这项工作证实了 SiO 双键的力常数值,在早期的研究中计算为大约 9 × 10 2 N m -1。
Electronic quenching and chemical reactions of SiH radicals in the gas phase
SiHradicals in the gasphase have been studied by LIF following the 193 and 248 nm photolysis of phenylsilane. The rate constants of electronicquenching by NO and O2 of SiH A 2Δ with a zero-pressure lifetime of 490±40 ns are determined to be (4.6±0.3) × 10−10 and (1.3±0.2) × 10−10 cm3 molecule−1 s−1, respectively. The reactions of SiH X 2Π with NO, O2, SiH4, and phenylsilane proceed at rates of (2
在193和248 nm的苯基硅烷光解之后,通过LIF研究了气相中的SiH自由基。由NO和电子淬火速率常数Ô 2的SiH A的2 Δ与490±40毫微秒的零压力寿命被确定为(4.6±0.3)×10 -10和(1.3±0.2)×10 -10 cm 3分子-1 s -1。的SiH X的反应2 Π与NO,O- 2,的SiH 4,和苯基硅烷继续在10的速率(2.5±0.3)× -10,(1.7±0.2)×10 -10,(2.8±0.6)×10 - 10和≈3×10 -10厘米分别为3个分子-1 s -1。与等价CH自由基的猝灭和反应机理进行了讨论。
Gold nanowires from silicon nanowire templates
作者:T. C. Wong、C. P. Li、R. Q. Zhang、S. T. Lee
DOI:10.1063/1.1641179
日期:2004.1.19
The work described in this letter is supported by two grants from the Research Grants Council of the Hong Kong SAR, China ~Project No. 8730016, e.g., CityU 3/01C; Project No. 9040633, e.g., CityU 1011/01P!, and by a grant from the Chinese Academy of Sciences, China.
1.5 µm luminescence of silicon nanowires fabricated by thermal evaporation of SiO
作者:G. Jia、M. Kittler、Z. Su、D. Yang、J. Sha
DOI:10.1002/pssa.200622143
日期:2006.6
Siliconnanowires (NWs) fabricated by thermalevaporation of SiO were studied by cathodoluminescence. A band around 1550 nm (0.8 eV) was observed. It appears above 225 K and its intensity increases with increasing temperature. The broad band consists of the defect-related D1 and D2 lines and is supposed to be formed by extended defects within the NWs that are decorated with oxygen. Moreover, luminescence
作者:A. Baumer、M. Stutzmann、M. S. Brandt、F. C.K. Au、S. T. Lee
DOI:10.1063/1.1775288
日期:2004.8.9
The paramagneticdefects in and on Si nanowires (SiNWs) obtained by oxide-assisted growth were studied by conventional electron spin resonance spectroscopy. For the as-grown nanowires, three different defects were found: Dangling bonds or Pb-centers with g=2.0065, located at the interface of the crystalline core to the surrounding oxide, E′-centers with g=2.0005 and EX-centers with g=2.00252, located
通过传统的电子自旋共振光谱研究了通过氧化物辅助生长获得的 Si 纳米线 (SiNW) 中和上的顺磁缺陷。对于生长的纳米线,发现了三种不同的缺陷:g=2.0065 的悬空键或 Pb 中心,位于晶核与周围氧化物的界面处,E' 中心,g=2.0005 和 EX 中心g=2.00252,位于氧化物中。对于 EX 中心,检测到由 16.4G 分隔的特征超细线。生长的 SiNW 显示出约 1018cm-3 的自旋密度。通过氢氟酸对纳米线的 H 终止使自旋密度急剧降低至 3×1016cm-3。