Assessment on Environmental Adaptability of Antireflective Films on Silicon in Typical Natural Environment
  
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DOI:10.7643/issn.1672-9242.2022.12.018
KeyWord:antireflective film on silicon  typical natural environment test  appearance  spectral transmittance  environmental adaptability
                             
AuthorInstitution
YANG Yu-ping Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
SONG Jian-hua Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
LIU Jian Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
ZHOU Xiao-yu Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
LIU Yan-fang Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
GE Fan Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
ZHAO Yuan-rong Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
WANG Chong-wen Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
LUO Rui Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
LIU Yun-hong Yunnan North Photoelectric Instrument Co., Ltd., Kunming , China
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Abstract:
      The work aims to know the environmental adaptability of antireflective films on silicon in natural environment. The exposure test method under shed was used to conduct natural environment test of antireflective films on silicon. The appearance, micro morphology, spectral transmittance and surface chemical composition of the samples were tested according to the cycle of 0.5 year, 1 year, 1.5 years and 2 years. The environmental adaptability of antireflective films on silicon was evaluated according to the degradation law of performance with test time and test environment. After 0.5 year of environment tests in humid and hot rain forest (Banna Station), warm and humid acid rain (Jiangjin Station), cold (Mohe Station) and island-reef climate of the South China Sea (Yongxing Island Station), the spectral transmittance of antireflective films on silicon decreased a little, there were obvious discoloration and film removal in some areas of the surface, the sample failed. With the extension of test time, the discoloration and film removal areas became larger and larger, and the spectral transmittance decreased significantly, in particular, the spectral transmittance decreased by about 80% after environment test of 2 years in the island-reef climate of the South China Sea. According to comparison of performance parameters, it is concluded that the island-reef climate of the South China Sea makes antireflective films on silicon have the worst environmental adaptability, followed by the warm and humid acid rain climate, and then the humid and hot rainforest climate. The environmental adaptability of antireflective films on silicon is relatively good in the cold climate.
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