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Reduction of Ambient Light Reflection in Organic Light‐Emitting Diodes
Author(s) -
Hung L. S.,
Madathil J.
Publication year - 2001
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 - 10.1002/1521-4095(200112)13:23<1787::aid-adma1787>3.0.co;2-9
Subject(s) - materials science , cathode , optoelectronics , layer (electronics) , reflection (computer programming) , diode , oled , light emitting diode , oxide , optics , nanotechnology , metallurgy , electrical engineering , physics , engineering , computer science , programming language
The reflectance of ambient light on a light‐emitting diode cathode can be reduced to less than 18 %! This is achieved by employing an oxygen‐deficient zinc oxide layer between the cathode and the electron‐transporting layer. The new structure provides a substantially enhanced contrast under ambient light conditions. The Figure shows devices without (left) and with (right) the zinc oxide layer (see also inside front cover).