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Study on The lonzation Potential, Electron Affinity and Electrochemical Property of PBO and PVK using Cyclic Voltammetry and Constant Current Potentiometry

순환전압전류법과 일정전류전위차법을 이용한 PBD와 PVK의 이온화에너지, 전자친화도 및 전기화학적 특성에 관한 연구

  • 형경우 (전주대학교 자연과학부) ;
  • 최돈수 (한국전기연구원(KERI) 지중시스템)
  • Published : 2003.12.01

Abstract

The effects of molecular structure on the redox properties are explored by the cyclic voltammetry, constant current potentiometry and spectroscopy using the thin films of organic electroluminescence materials of Poly(N-vinylcarbazole); PVK and 2- (4'-tert-butylphenyl) -5-(4"-bisphenyl) -1,3,4-oxadiazole; PBD. The UV/visible absorption maxima and band gap (E$\_$g/) show at 310nm (4.00eV) and 368nm (3.37eV) for FBD, 344nm (3.60eV) and 356nm (3.48eV) for PVK, respectively. The measured electrochemical ionization potential (IP) and electron affinity (EA) of these materials we 5.87 and 2.82eV for PBD, 5.80 and 3.17eV for PVK, respectively. The electrical band gaps are 3.05eV for PBD and 2.78eV for PVK, respectively. The electrical hole gap and electron gap with respect to the first rising potentials and the inflection potentials are obtained to be 0.39V and 0.41V for PBD, 0.25V and 0.28V for FVK, respectively.

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