TITLE:
Hardening and Optimizing of the Black Gold Thin Film as the Absorption Layer for Infrared Detector
AUTHORS:
Dong-pei Qian, Chuan-gui Wu, Yao Shuai, Wen-bo Luo, Qiang-xiang Peng, Xiao-yong Chen, Wan-li Zhang
KEYWORDS:
Black Gold; 502 Fuming; Absorption Layer
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.2B,
July
22,
2013
ABSTRACT:
This paper reports on the
study of the black gold thin film as the absorption layer in the near infrared
spectrum. The fabrication of the black gold thin film was achieved by a thermal
evaporation technique in N2 atmosphere. Different evaporation
conditions were attempted to optimize the absorbance of the black gold coating,
especially the atmosphere pressure and the mass of evaporation source. The
long-standing problem of black gold’s adhesion with the substrate was solved by
fuming 502 superglues into the black gold layer, which had almost no impact on
the absorbance performance. Layers produced at N2 atmosphere of 3×103 Pa show an absorbance exceeding0.9 inthe near infrared.