Acta Phys. -Chim. Sin. ›› 2003, Vol. 19 ›› Issue (08): 770-773.doi: 10.3866/PKU.WHXB20030820

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Chemical Reaction between LiF and Al with or without the Presence of Alq3

Zhang Han-Jie;Bao Shi-Ning;He Pi-Mo;Wang Sui-Dong;Fung Ming-Kai;Lee Zheng-Sheng;Lee Shu-Tang   

  1. Department of Physics, Zhejiang University, Hangzhou 310027; 1COSDAF and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR
  • Received:2002-12-24 Revised:2003-04-01 Published:2003-08-15
  • Contact: Bao Shi-Ning

Abstract: The interaction between LiF and Al has been studied by X-ray photoemission spectroscopy (XPS) and high-resolution electron energy loss spectroscopy (HREELS).The reaction between LiF and Al occurs in the presence of Alq3 at room temperature. In the Al/LiF/Alq3 system, the Li 1s peak shifts 0.25 eV relative to the F 1s peak during the reaction. On warming the Al substrate covered LiF to 350 K, interaction between LiF and Al is revealed by a shoulder peak, which is about 0.85 eV below the original Li 1s peak. XPS measurement revealed that the shoulder peak corresponds to metal Li 1s, this result is confirmed by HREELS measurements.

Key words: LiF, Al, XPS, HREELS