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상압에서 제조한 포토캐소드의 전자방출 특성에 관한 연구

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A Study on Electron Emission Characteristics of Photocathode Formed Under Condition in N2 Atmosphere

Hyo Soo Jeong
J Electr Electron Mater 2014;27(5):312-316.
Published online: May 1, 2014
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광전자 방출은 빛에 의하여 자유전자가 방출되는 현상으로 포토캐소드가 이에 해당하는 소재이다. 따라서 포토캐소드는 빛을 받으면 전자를 진공 중으로 방출한다. 포토캐소드 제작 공정은 매우 복잡하며, 특별한 장치를 요구하기 때문에 일반적으로 소면적으로 제작된다. 본 연구에서는 포토캐소드를 진공이 아닌 질소분위기 상태에서 제작하였다. 진공소자를 제작하여 포토캐소드의 전자방출 특성을 평가하였다. 전자방출을 유발하는 광원으로는 475 nm의 청색광원을 사용하였다. 연구 결과는 전자방출에서 높은 전류밀도와 장기적인 안전성을 나타내었다.

Photoemission is a process in which photons are converted into free electrons. Photocathodesare the typical materials for the process. They emit electrons when a light is irradiated upon. Thetraditional method of manufacturing photocathodes is complicated, requires specialized equipment, and islimited very small sized samples. Cs3Sb photocathode was formed on a substrate in   atmosphericconditions. The photocathode formation was a gas phase reaction with the substrate. Vacuum deviceswere made to test electron emission characteristics of the formed photocathode. Visible light ofwavelength 475 nm was used for the primary light source. The results showed high current density andlong term stability of the photoelectron emission.

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A Study on Electron Emission Characteristics of Photocathode Formed Under Condition in N2 Atmosphere
J Electr Electron Mater. 2014;27(5):312-316.   Published online May 1, 2014
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

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A Study on Electron Emission Characteristics of Photocathode Formed Under Condition in N2 Atmosphere
J Electr Electron Mater. 2014;27(5):312-316.   Published online May 1, 2014
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