• 제목/요약/키워드: Vacuum Adsorption

검색결과 301건 처리시간 0.032초

알칼리금속/Si(111)표면에서의 구조변화 및 탈착에너지 조사 (The change of alkali-metals/Si(111) surface structure and Investigation of desorption energy)

  • 곽호원;정승민
    • 한국산업융합학회 논문집
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    • 제6권3호
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    • pp.201-205
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    • 2003

  • 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.

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