1. Aluminum and silicon hybrid nano-cavities for four-band, near-perfect light absorbers.
- Author
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Liu, Zhengqi, Fu, Guolan, Huang, Zhenping, Chen, Jian, Pan, Pingping, Yang, Yan-Xing, and Liu, Zhong-Min
- Subjects
- *
ALUMINUM compounds , *METAL semiconductor field-effect transistors - Abstract
Multi-band light perfect absorbers formed by metal-semiconductor materials are desirable for optoelectronics and have been long pursued. In this work, we numerically propose and demonstrate a four-band resonant near-perfect light absorption by utilizing the aluminum ring intercalated with silicon disk array, which can support strong plasmonic resonances and optical cavity modes. The multi-band near-perfect absorption can be tuned by the structural parameters and the maximal absorption is exceeding 99.8%. These features lay a foundation for low-cost optoelectronic technologies since the semiconductor silicon cavities are currently very important elements in the field of photonics. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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