ชื่อเรื่อง | : | Optical properties of silicon nanocrystals embedded in a SiO2 matrix |
นักวิจัย | : | Ding, Liang , Chen, Tupei , Liu, Yang , Ng, Chi Yung , Fung, Stevenson Hon Yuen |
คำค้น | : | DRNTU::Engineering::Electrical and electronic engineering::Microelectronics |
หน่วยงาน | : | Nanyang Technological University, Singapore |
ผู้ร่วมงาน | : | - |
ปีพิมพ์ | : | 2548 |
อ้างอิง | : | Ding, L., Chen, T. P., Liu, Y., Ng, C. Y., & Fung, S. H. Y. (2005). Optical properties of silicon nanocrystals embedded in a SiO2 matrix. Physical Review B 72, 1-7. , 1098-0121 , http://hdl.handle.net/10220/6358 , http://dx.doi.org/10.1103/PhysRevB.72.125419 |
ที่มา | : | - |
ความเชี่ยวชาญ | : | - |
ความสัมพันธ์ | : | Physical review B |
ขอบเขตของเนื้อหา | : | - |
บทคัดย่อ/คำอธิบาย | : | Optical properties of isolated silicon nanocrystals (nc-Si) with a mean size of ∼4 nm embedded in a SiO2 matrix that was synthesized with an ion beam technique have been determined with spectroscopic ellipsometry in the photon energy range of 1.1–5.0 eV. The optical properties of the nc-Si are found to be well described by both the Lorentz oscillator model and the Forouhi-Bloomer (FB) model. The nc-Si exhibits a significant reduction in the dielectric functions and optical constants and a large blueshift (∼0.6 eV) in the absorption spectrum as compared with bulk crystalline silicon. The band gap of the nc-Si obtained from the FB model is ∼1.7 eV, showing a large band gap expansion of ∼0.6 eV relative to the bulk value. The band gap expansion is in very good agreement with the first-principles calculation of the nc-Si optical gap based on quantum confinement. |
บรรณานุกรม | : |
Ding, Liang , Chen, Tupei , Liu, Yang , Ng, Chi Yung , Fung, Stevenson Hon Yuen . (2548). Optical properties of silicon nanocrystals embedded in a SiO2 matrix.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Ding, Liang , Chen, Tupei , Liu, Yang , Ng, Chi Yung , Fung, Stevenson Hon Yuen . 2548. "Optical properties of silicon nanocrystals embedded in a SiO2 matrix".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Ding, Liang , Chen, Tupei , Liu, Yang , Ng, Chi Yung , Fung, Stevenson Hon Yuen . "Optical properties of silicon nanocrystals embedded in a SiO2 matrix."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2548. Print. Ding, Liang , Chen, Tupei , Liu, Yang , Ng, Chi Yung , Fung, Stevenson Hon Yuen . Optical properties of silicon nanocrystals embedded in a SiO2 matrix. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2548.
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