紫外线
材料科学
兴奋剂
溅射沉积
光电子学
薄膜
探测器
腔磁控管
溅射
光学
纳米技术
物理
作者
Yantao Liu,Rong Huang,Tao Lin,Jiale Dang,Haoxiang Huang,Jiahao Shi,Sui Chen
出处
期刊:Materials
[MDPI AG]
日期:2024-07-01
卷期号:17 (13): 3227-3227
被引量:1
摘要
Sn-doped Ga2O3 thin films and metal–semiconductor–metal (MSM) ultraviolet detectors were prepared using the co-sputtering method to enhance their photoelectric performance. The results revealed that Sn doping can effectively change the optical and electrical properties of thin films, greatly improving the photoelectric responsiveness of the devices. Through microstructure testing results, all of the thin film structures were determined to be monoclinic beta phase gallium oxide. At a DC power of 30 W, the thickness of the Sn-doped thin film was 430 nm, the surface roughness of the thin film was 4.94 nm, and the carrier concentration, resistivity, and mobility reached 9.72 × 1018 cm−3, 1.60 × 10−4 Ω·cm, and 45.05 cm3/Vs, respectively. The optical results show that Sn doping clearly decreases the transmission of thin films and that the bandgap can decrease to 3.91 eV. Under 30 W DC power, the photo dark current ratio of the detector can reach 101, time responses of tr = 31 s and tf = 22.83 s were obtained, and the spectral responsivity reached 19.25 A/W.
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