Abstract：The UV-responsive detector is a dual-use device for civilian and military after the laser and IR-responsive sensors. Typical image sensor coated with a layer of down-convert frequency thin film on it’s photosurface to enhance UV response is the key technology of enhancing UV-response. The UV-enhanced thin film was made in the experimental laboratory using the Zn2SiO4∶Mn phosphor by spin coating method. Two peaks at 520 and 560 nm respectively in the emission spectrum of the UV-enhanced film were found by SP1702 spectrograph when the excitation wavelength was 260 and 280 nm.The peaks were found in the process of experiment of measuring and counting the quantum efficiency of UV-enhanced thin film. But the light peaks at 520 and 560 nm are not the emission light peaks by the exciting light of 260 and 280 nm. The reason why the light at 520 and 560 nm is not the emission light was analyzed based on the measurement principle of grating spectrograph. The reasons for the multi-wavelength of light overlaps during the measurement of emission spectrum were also discussed. And the equipment used to separate the overlapped different wavelengths was designed, which will be used to resolve the problem of the overlap of multi-wavelength.
Key words：Ultraviolet;Emission spectrum;Multi-wavelength;Separator for overlaps
[1] Guedj C, Moussy N, Rabaud W. Journal of Non-Crystalline Solids，2004，338-340：749. [2] Franks W A R, Kiik M J, Nathan A. IEEE Transactions on Electron Device, 2003，50(2)：352. [3] ZHOU Qingchun. Commun. Theor. Phys., 2006, 45(4): 727. [4] Min Sun Kim, Chong Sook Paik Sung. Fibers and Polymers，2005, 6：127. [5] Rao R P. Journal of Luminescence，2005, 113: 271. [6] Photo technology. Ltd. http://www.phosphor-technology.com/products/iruv.htm [7] Kandarakis D，Cavouras P，Prassopoulos, E. et al. Appl. Phys. A，1998, 67;521. [8] Tanasufu((苏) K N 塔拉索夫). Spectrograph(光谱仪器). Translated by BAO Xue-cheng, SANG Sheng-quan, ZHU Shao-qi(包学诚，桑胜泉，祝绍箕，译). Beijing：China Machine Press(北京: 机械工业出版社)，1985. 91. [9] YU Dao-ying, TAN Heng-ying(郁道银, 谈恒英). Engineer Optics(工程光学). Beijing：China Machine Press(北京: 机械工业出版社)，2005. 362. [10] Hutey M C. Diffraction Gratings. Great Britain at the Alden Press: Academic Press，1982. 57. [11] LIN Zhong, FAN Shi-fu(林 中, 范世福). Instrumental Spectroscopy(光谱仪器学). Beijing：China Machine Press(北京: 机械工业出版社)，1988. 72. [12] WU Guo-an(吴国安). The Design of Spectrograph(光谱仪器设计). Beijing：Science Press(北京: 科学出版社)，1973. 8, 41.
