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1. (WO2017020407) VISIBLE AND NEAR-INFRARED LIGHT ULTRA-BROADBAND ABSORBER AND MANUFACTURING METHOD THEREOF

Pub. No.:    WO/2017/020407    International Application No.:    PCT/CN2015/090201
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Tue Sep 22 01:59:59 CEST 2015
IPC: G02B 5/00
B32B 15/00
B32B 9/00
G12B 17/04
Applicants: ZHEJIANG UNIVERSITY
浙江大学
Inventors: SHEN, Weidong
沈伟东
YANG, Chenying
杨陈楹
ZHANG, Yueguang
章岳光
FANG, Bo
方波
LIU, Xu
刘旭
Title: VISIBLE AND NEAR-INFRARED LIGHT ULTRA-BROADBAND ABSORBER AND MANUFACTURING METHOD THEREOF
Abstract:
A visible and near-infrared light ultra-broadband absorber and manufacturing method thereof. The visible and near-infrared light ultra-broadband absorber comprises a substrate (1) and 5 layers of optical thin-films. A bottommost thin-film is a metal bottom absorption layer (2). A top germanium layer (3) is arranged above the metal bottom absorption layer. Three layers of reflection reduction films (4-6) are arranged above the top germanium layer. The three layers of the reflection reduction films from the bottom up have decreasing material reflectance. The embodiments of the invention realize angle-insensitive ultra-broadband absorption of a visible or near-infrared light on the basis of the metal absorption layer blocking an incident effect, combined with the germanium layer and the broadband reflection reduction layers, and is simpler in structure.