中国物理B ›› 1998, Vol. 7 ›› Issue (8): 618-622.doi: 10.1088/1004-423X/7/8/010

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

COLORATION EFFECT OF PULSED LASER ON WO3

赵岩, 冯钟潮, 梁勇   

  1. Institute of Metal Research, Academia Sinica, Shenyang 110015, China.
  • 收稿日期:1997-12-22 修回日期:1998-03-26 出版日期:1998-08-20 发布日期:1998-08-20

COLORATION EFFECT OF PULSED LASER ON WO3

Zhao Yan (赵岩), Feng Zhong-chao (冯钟潮), Liang Yong (梁勇)   

  1. Institute of Metal Research, Academia Sinica, Shenyang 110015, China.
  • Received:1997-12-22 Revised:1998-03-26 Online:1998-08-20 Published:1998-08-20

摘要: When laser pulses irradiate the surface of the sample WO3, an interesting coloration effect is obtained. Only by one pulse of XeCl laser irradiation (wavelength: 308 nm, pulse duration: 36 ns, output power: 100 mJ/pulse), a significant color change appears. X-ray photoelectron spectroscopy (XPS) shows that a partial reduction process of WO3 occurs and conduction band electrons appears. X-ray diffraction pattern indicates that the lattice parameters of the colored samples are increased. A molten layer can be seen in scanning electron microscopy (SEM) image. It may be concluded that the coloration effect of pulsed laser undergoes a process different from that of electro- or photo- chromism, and may be attributed to thermochromism and substoichiometric WO3 is formed. The coloration process is characterized by its high speed and stability.

Abstract: When laser pulses irradiate the surface of the sample WO3, an interesting coloration effect is obtained. Only by one pulse of XeCl laser irradiation (wavelength: 308 nm, pulse duration: 36 ns, output power: 100 mJ/pulse), a significant color change appears. X-ray photoelectron spectroscopy (XPS) shows that a partial reduction process of WO3 occurs and conduction band electrons appears. X-ray diffraction pattern indicates that the lattice parameters of the colored samples are increased. A molten layer can be seen in scanning electron microscopy (SEM) image. It may be concluded that the coloration effect of pulsed laser undergoes a process different from that of electro- or photo- chromism, and may be attributed to thermochromism and substoichiometric WO3 is formed. The coloration process is characterized by its high speed and stability.

中图分类号:  (Ultraviolet, visible, and infrared radiation effects (including laser radiation))

  • 61.80.Ba
79.60.Bm (Clean metal, semiconductor, and insulator surfaces) 73.20.-r (Electron states at surfaces and interfaces) 71.20.Ps (Other inorganic compounds) 61.66.Fn (Inorganic compounds)