[21p-C402-1~16] 6.2 Carbon-based thin films

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[21p-C402-11] Photoelectron emission mechanism in semiconductor diamond and its application to evaluation of the carrier diffusion length

Ryota Tsukamoto^1,2, Shoya Yamakawa^1,2, Hiromitsu Kato², Yukako Kato², Masahiko Ogura², Masatsugu Nagai², Toshiharu Makino², 〇Daisuke Takeuchi^1,2, Ichiro Shoji¹ (1.Chuo Univ., 2.AIST)

Keywords:

diamond,NEA,diffusion length

Diamond has its unique properties like NEA (Negative Electron Affinity) in the surface, where free electrons and/or free excitons propagate in to the vacuum without any energy barriers. According to Spicer's 3 step model, we could consider the evaluation method of their diffusion length in bulk, and we elucidated these numbers in experiments.