| 释义 |
ˌphotolumiˈnescence Physics.
† Also with hyphen.
[ad. G. photoluminescenz (E. Wiedemann 1888, in Ann. d. Physik und Chem. XXXIV. 447): see photo- 1 and luminescence.]
Luminescence caused by visible light or by infra-red or ultraviolet radiation.
1889tr. E. Wiedemann in Phil. Mag. XXVIII. 151 According to the mode of excitation I distinguish Photo-, Electro-, Chemi-, and Tribo-luminescence. In particular, photo-luminescence, including fluorescence and a number of cases of phosphorescence, is defined as those phenomena in which the incident light excites vibrations within the molecule of a body which produce directly an emission of light. 1913H. S. Allen Photo-Electricity xi. 147 By means of this hypothesis [sc. of light quanta] Einstein sought to explain such phenomena as the photo-electric effect, the ionisation of gases by ultra-violet light, photo-luminescence, and the theory of specific heat. 1930Times Lit. Suppl. 6 Mar. 195/2 A masterly account..including the theory of atomic and molecular structure and spectra, and photoluminescence. 1968McGraw-Hill Yearbk. Sci. & Technol. 345/1 Little effort has been put into using semiconductors in powder phosphor applications for photoluminescence and cathodoluminescence, because efficient powder phosphors are already available to cover the entire visible spectrum.
Hence ˌphotolumiˈnescent a.
1909in Cent. Dict. Suppl. 1958Sci. News XLVII. 14 The difference between photoluminescent materials, e.g., those used in fluorescent lamps, and most electroluminescent phosphors is thus primarily a difference in the mode of electron excitation. 1968H. T. Minden in S. L. Marshall Laser Technol. & Applic. v. 102 Before describing the GaAs injection electroluminescent spectra, it is instructive to study the more conventional photoluminescent spectrum. |