首页|Investigation of defect reduction and hydrogen diffusion in Si/SiO_2 multilayer films by hydrogen radical treatment

Investigation of defect reduction and hydrogen diffusion in Si/SiO_2 multilayer films by hydrogen radical treatment

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In this study, the effect of hydrogen radical (HR) treatment on Si/SiO_2 multilayer (ML) films was investigated, focusing on the reduction of silicon dangling bond (Si-DB) defects and their impact on electrical properties. Electron spin resonance analysis revealed that HR treatment effectively reduced the density of Si-DB defects in Si/SiO_2 ML films. Electrical measurements demonstrated enhanced dark conductivity and reduced activation energy of carriers following HR treatment. These changes were attributed to the reduction in Si-DB defects. Furthermore, the photo- sensitivity of the HR-treated films improved, suggesting that HR treatment is a promising technique for defect reduction and performance enhancement of the solar cells with Si/SiO_2 ML absorbers.

Shigeru Yamada、Naoki Matsuo、Tomohiro Deto、Tomoki Fujisawa、Yuto Ebata、Yuki Nishi、Takashi Itoh

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Department of Electrical,Electronic and Computer Engineering,Gifu University,1-1 Yanagito,Gifu,Gifu 501-1193,Japan

2025

Japanese Journal of Applied Physics

Japanese Journal of Applied Physics

ISSN:0021-4922
年,卷(期):2025.64(5)
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