Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)
- Volume 6 Issue 3
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- Pages.201-205
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- 2003
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- 1226-833X(pISSN)
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- 2765-5415(eISSN)
The change of alkali-metals/Si(111) surface structure and Investigation of desorption energy
알칼리금속/Si(111)표면에서의 구조변화 및 탈착에너지 조사
- Kwak, Ho-Weon (Dept. of Visual Optics, kyungwoon University) ;
- Jung, Sung-Min (COMTECS The Research Institute for vacuum)
- Received : 2003.04.23
- Accepted : 2003.08.20
- Published : 2003.08.31
Abstract
The effects of adsorption and desorption of alkali-metals on Si(111) surface were investigated by using AES and RHEED-system. The adsorption system is a fundamental interest because of its unique electronic properties such as measurement of work function change, adatom-core level shift. It was found that the growth node of K on Si(111) surface was layer by layer growth and the saturation coverage was 2.0ML at room temperature. Superstructure changes on Si(111) surface according to the alkali-metal thickness and substrate temperatures were accurately defined. By applying the isothermal desorption method, the desorption energies of Li/Si(111) and K/Si(111) surfaces was measured. On Li/Si(111) and K/Si(111) surfaces, the desorption energies were 3.07 eV, 2.19 eV respectively.