Nanometer Thick Diffused Hafnium and Titanium Oxide Light Sensing Film Structures

• 作者: Fred J. Cadieu Lev Murokh
• 来源期刊: 凝固态物理国际期刊(英文)
• 学科: 医学
• 关键词: THIN Film LIGHT Sensing Current Enhancement Interface STATES HAFNIUM Titanium
• 年，卷（期）: 2017,（1）
• 页码范围: 36-45
• 页数: 10页
• 分类号: R73

摘要

We examine 10 nm thick film structures containing either Hf or Ti sandwiched between two respective oxide layers. The layers are deposited onto heated substrates to create a diffusion region. We observe a high degree of light sensitivity of the electric current through the film thickness for one polarity of an applied voltage. For the other polarity, the current is not affected by the light. We explain the observed phenomenology using the single-particle model based on the existence of interface states on the metal-oxide interfaces.