Diffusion – the Hidden Menace in Organic Optoelectronic Devices | Zendy

Smith Arthur R. G. | Zendy; Lee Kwan H. | Zendy; Nelson Andrew | Zendy; James Michael | Zendy; Burn Paul L. | Zendy; Gentle Ian R. | Zendy

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Diffusion – the Hidden Menace in Organic Optoelectronic Devices

Author(s) -

Smith Arthur R. G.,

Lee Kwan H.,

Nelson Andrew,

James Michael,

Burn Paul L.,

Gentle Ian R.

Publication year - 2012

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201104029

Subject(s) - triphenylamine , iridium , diffusion , materials science , layer (electronics) , tris , biphenyl , fick's laws of diffusion , electron , optoelectronics , solid state , nanotechnology , engineering physics , organic chemistry , physics , chemistry , nuclear physics , thermodynamics , biochemistry , catalysis

In a film stack of bathocuproine (BCP) (electron transport layer), fac ‐tris(2‐phenylpyridyl)iridium(III) [Ir(ppy) 3 ] blended in 4,4′‐bis( N ‐carbazolyl)biphenyl (CBP) (light‐emitting layer), and 4,4′,4″‐tris( N ‐carbazolyl)triphenylamine (TCTA) (hole transport layer), the BCP and Ir(ppy) 3 :CBP layers rapidly interdiffuse by anomalous Fickian diffusion. Diffusion leads to a decrease of up to 33% in the solid‐state emission but no change in color.

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