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Optical Absorbers: Nanocavity Enhancement for Ultra‐Thin Film Optical Absorber (Adv. Mater. 17/2014)
Author(s) -
Song Haomin,
Guo Luqing,
Liu Zhejun,
Liu Kai,
Zeng Xie,
Ji Dengxin,
Zhang Nan,
Hu Haifeng,
Jiang Suhua,
Gan Qiaoqiang
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201470113
Subject(s) - materials science , thin film , planar , optoelectronics , absorption (acoustics) , interference (communication) , nanotechnology , optics , composite material , physics , channel (broadcasting) , computer graphics (images) , engineering , computer science , electrical engineering
On page 2737, Q. Gan, S. Jiang, and co‐workers develop a fundamental strategy to enhance the light‐matter interaction of ultra‐thin (i.e., 1.5–3 nm) Ge films based on a strong interference effect in planar nanocavities, and overcome the limitation between the optical absorption and film thickness of energy‐harvesting/conversion materials. This principle is quite general and can be applied to explore the spectrally tunable absorption enhancement of various ultra‐thin absorbing materials.