Effect of Metal Photonic Crystal Structure on Its Transmittance Intensity and Width
ZHAO Yali1, JIA Kun2, ZHAO Yan1, MA Yufeng2, LI Xufeng3,*
1 School of Mathmatics and Phsics,Jinzhong University, Yuci 030606, China 2 No.33 Research Institute of China Electronics Technology Group Corporation, Taiyuan 030006, China 3 School of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China
Abstract: Metal photonic crystals (MPCs) could potentially be used in the visible part of electronic devices, which is expected to achieve the compatibility of visible and electromagnetic shielding. The fundamental challenge for its application is achieving the ideal combination of both high and broad band transmittance without decreasing the metal film thickness ratio. In this paper, finite difference time difference domain (FDTD) and Bragg diffraction law were used to investigate the influence of MPCs period on transmittance. The results suggested that the period greater than 58 nm is essential for high optical transmittance. When the thickness of each layer ITO is 40 nm, optical transmittance of MPCs is lower due to lower energy of surface plasmon polariton (SPP). With decreasing of the metal film thickness ratio, the energy band of SPP widen accordingly. Accordingly, the optical transmittance line also widen. In this paper, the MPCs is proposed with type of (pqp)N, both the intensity and width of optical transmittance line are improved by adopting it.
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2021, Vol. 35 
