Tellurium thin films were prepared by the chemical vapor deposition method. The structure, surface morphology and optical properties of the Te thin films were analyzed by powder X-ray diffraction, scanning electron mi...Tellurium thin films were prepared by the chemical vapor deposition method. The structure, surface morphology and optical properties of the Te thin films were analyzed by powder X-ray diffraction, scanning electron microscopy, FTIR transmission, UV/VIS/NIR transmission and reflectance. The results show that the films structural and optical properties are influenced by many factors such as film thickness, crystallite size and substrate temperature. The films as thick as 111?133 nm have high IR transmission across the full 8?13 μm band and highly blocking in the solar spectral region elsewhere, which indicates that Te films thickness in this region can be used as good solar radiation shields in radiative cooling devices.展开更多
The bonding process of space solar cells is a very complicated task undertaken by manual labor before.An automatic approach based on robot technology is presented to deal with the difficult problem.The architecture of...The bonding process of space solar cells is a very complicated task undertaken by manual labor before.An automatic approach based on robot technology is presented to deal with the difficult problem.The architecture of the bonding robot for space solar cells is described.The two processes carried out by the robot,adhesive dispensing and cover-glass bonding,are studied.Based on the mechanical model,the flow velocity field of the adhesive in needles is obtained and the cover-glass bonding theory is interpreted.According to the studies,the thickness of the adhesive can be controlled accurately by robot and bubbles can be avoided coming about inside the adhesive.展开更多
基金Project(50204001) supported by the National Natural Science Foundation of China
文摘Tellurium thin films were prepared by the chemical vapor deposition method. The structure, surface morphology and optical properties of the Te thin films were analyzed by powder X-ray diffraction, scanning electron microscopy, FTIR transmission, UV/VIS/NIR transmission and reflectance. The results show that the films structural and optical properties are influenced by many factors such as film thickness, crystallite size and substrate temperature. The films as thick as 111?133 nm have high IR transmission across the full 8?13 μm band and highly blocking in the solar spectral region elsewhere, which indicates that Te films thickness in this region can be used as good solar radiation shields in radiative cooling devices.
文摘The bonding process of space solar cells is a very complicated task undertaken by manual labor before.An automatic approach based on robot technology is presented to deal with the difficult problem.The architecture of the bonding robot for space solar cells is described.The two processes carried out by the robot,adhesive dispensing and cover-glass bonding,are studied.Based on the mechanical model,the flow velocity field of the adhesive in needles is obtained and the cover-glass bonding theory is interpreted.According to the studies,the thickness of the adhesive can be controlled accurately by robot and bubbles can be avoided coming about inside the adhesive.
