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Low-Temperature Fabrication (≤150 °C) of High-Quality Sputtered Silicon Oxide Thin Film with Hydrogen Plasma Treatment
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-09-21 , DOI: 10.1021/acsaelm.0c00631 Taewon Seo 1 , Hyuk Park 1 , Gilsu Jeon 1 , Juyoung Yun 1 , Seongmin Park 1 , Suwon Seong 1 , Yoonyoung Chung 1
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-09-21 , DOI: 10.1021/acsaelm.0c00631 Taewon Seo 1 , Hyuk Park 1 , Gilsu Jeon 1 , Juyoung Yun 1 , Seongmin Park 1 , Suwon Seong 1 , Yoonyoung Chung 1
Affiliation
Low-temperature fabrication of thin-film dielectrics is essential for various applications including flexible/stretchable electronics, monolithic three-dimensional integrated circuits, and large-area sensors/displays. Silicon dioxide is one of the most extensively used dielectric materials, but conventional deposition methods such as plasma-enhanced chemical vapor deposition and atomic layer deposition require relatively high temperatures. In this study, a high-quality SiO2 thin film was fabricated at low temperatures below 150 °C using sputtering and hydrogen plasma treatment. The sputtered SiO2 thin film exhibited low leakage current (3 × 10–7 A/cm2 at 3 MV/cm) and a high breakdown field (11.33 MV/cm). After hydrogen plasma treatment was carried out under optimized conditions, the interface trap density between Si and sputtered SiO2 was minimized to 7 × 1011 cm–2 eV–1, which is comparable to the corresponding value for thermally grown SiO2. The results of X-ray photoelectron spectroscopy and secondary-ion mass spectroscopy confirmed that the hydrogen treatment effectively passivates dangling bonds and reduces the portion of oxygen-deficient species.
中文翻译:
氢等离子体处理的低温溅射高质量氧化硅薄膜的低温制造(≤150°C)
薄膜电介质的低温制造对于包括柔性/可拉伸电子设备,单片三维集成电路和大面积传感器/显示器在内的各种应用都是必不可少的。二氧化硅是使用最广泛的介电材料之一,但是常规的沉积方法(如等离子体增强化学气相沉积和原子层沉积)需要相对较高的温度。在这项研究中,通过溅射和氢等离子体处理,在低于150°C的低温下制造了高质量的SiO 2薄膜。溅射的SiO 2薄膜具有低漏电流(3×10 –7 A / cm 23 MV / cm)和高击穿场(11.33 MV / cm)。在最佳条件下进行氢等离子体处理后,Si和溅射的SiO 2之间的界面陷阱密度最小化为7×10 11 cm –2 eV –1,这与热生长的SiO 2的相应值相当。X射线光电子能谱和二次离子质谱的结果证实,氢处理有效地钝化了悬空键并减少了缺氧物种的比例。
更新日期:2020-10-28
中文翻译:
氢等离子体处理的低温溅射高质量氧化硅薄膜的低温制造(≤150°C)
薄膜电介质的低温制造对于包括柔性/可拉伸电子设备,单片三维集成电路和大面积传感器/显示器在内的各种应用都是必不可少的。二氧化硅是使用最广泛的介电材料之一,但是常规的沉积方法(如等离子体增强化学气相沉积和原子层沉积)需要相对较高的温度。在这项研究中,通过溅射和氢等离子体处理,在低于150°C的低温下制造了高质量的SiO 2薄膜。溅射的SiO 2薄膜具有低漏电流(3×10 –7 A / cm 23 MV / cm)和高击穿场(11.33 MV / cm)。在最佳条件下进行氢等离子体处理后,Si和溅射的SiO 2之间的界面陷阱密度最小化为7×10 11 cm –2 eV –1,这与热生长的SiO 2的相应值相当。X射线光电子能谱和二次离子质谱的结果证实,氢处理有效地钝化了悬空键并减少了缺氧物种的比例。