本课题旨在研制高稳定性、长寿命和优异耐候性，适用于平板集热器的新型光谱选择性吸收涂层。从材料选择和结构设计两方面入手，利用多种气相沉积技术相结合的方法，通过多元纳米复合，将具有优异物理和化学性能的a-C:H薄膜应用于太阳能光热领域，制备基于a-C:H薄膜的纳米晶MeC（MeC=TiC, CrC, WC）/非晶碳(a-C:H)复合光谱选择性吸收涂层。考察沉积条件对涂层成分及结构的影响；研究涂层成分及结构对其光学性能、抗腐蚀性能、耐高温性能和力学性能的影响及影响机理；探讨沉积条件-涂层成分、各单层厚度及结构-涂层性能特别是光学性能间的内在联系。优化沉积条件，实现涂层的成分和结构控制，制备综合性能优异的纳米晶MeC-非晶碳复合光谱选择性吸收涂层，建立非晶碳基光谱选择性吸收涂层的制备工艺-结构-性能的关系模型，为拓宽非晶碳薄膜在太阳能光热领域的应用提供实践经验和理论依据。

The present project is aimed at developing a new long-life solar selective absorber coating with high stability and outstanding weather resistance which can be applied to flat plate collectors. Considering material selection and structure design,we will use multi-element nanotechnology , which is achieved by multiple vapor deposition , to produce the new nanocrystalline(TiC, CrC, WC)/amorphous carbon (a-C:H) solar selective coating based on a-C:H film. We also intend to prepare a-C:H films with excellent physical and chemical properties ,and introduce them to the solar thermal application through our multi-element nanotechnology. In this project we will investigate how the deposition parameters affect the coatings composition and structure, study the role of coating's composition and strucrure that takes in the vary of its corrosion resistance,heat resistance,optical and mechanical properties,and we will describe the inner relationship between deposition conditions and coatings composition and layers thickness, coatings structure and performance especially optical property as well. In addition, we will focuse on optimizing deposition conditions and controlling the coatings composition and structure to prepare nanocrystalline (TiC, CrC, WC)/amorphous carbon (a-C:H) composite spectrum solar selective coatings with excellent comprehensive performance. This project will provide more practical and theoretical basis to the amorphous carbon films adhibition in solar thermal capplicition by establishing the relationship mode of preparation technology-structure-performance of amorphous carbon based solar selective absorber coating.