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Influence of RMS strain on optical band gap of ZincPhthalocyanine (ZnPc) thin films

Sathyamoorthy, R.; Senthilarasu, S.


R. Sathyamoorthy


The Flash evaporated ZincPhthalocyanine (ZnPc) thin films were analyzed using atomic force microscope (AFM). A homogeneous distribution of crystalline domains can be observed from the image. The crystallite size increases with increase in film thickness. From the transmission spectra, the transmission is found to be decrease with increase of film thickness. The optical transition in ZnPc films is found to be direct and allowed. The RMS strain deceases with increasing film thickness and it strongly influences the band gap of the flash evaporated ZnPc thin films. The optical band gap energy is found to decrease with increase in film thickness.

Journal Article Type Article
Acceptance Date Jun 1, 2005
Online Publication Date Aug 8, 2005
Publication Date 2006-02
Deposit Date Mar 13, 2023
Print ISSN 0038-092X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 80
Issue 2
Pages 201-208
Keywords ZincPhthalocyanine, Flash evaporation, Structural, AFM, Optical