Diamond-like carbon films as electron-injection layer in organic light emitting diodes

被引：27
作者：
Lmimouni, K
Legrand, C
Dufour, C
Chapoton, A
Belouet, C
机构：
[1] Univ Sci & Tech Lille Flandres Artois, IEMN, DHS, CNRS,UMR 8520, F-59652 Villeneuve Dascq, France
[2] ALCATEL CIT, Etablissement Marcoussis, F-91461 Marcoussis, France
来源：
APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 17期
关键词：
D O I：
10.1063/1.1367900
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this letter a thin film of diamond-like carbon (DLC) deposited by pulse laser deposition (PLD) is used as an electron injection layer in organic light emitting diodes. The heterojunction structures of these devices consist of: indium tin oxide (ITO)/conducting polymer/DLC/nickel, or ITO/DLC/P3OT/Pt. Poly(3-octylthiophene) conjugated polymer (P3OT) is used as the emission layer. In all the realized diodes, the current is two orders of magnitude larger than in the conventional ITO/P3OT/aluminum structure, and the driving voltage is drastically reduced. However, the light emission is observed only in the ITO/DLC/P3OT/Pt structure. These results can be interpreted in terms of a highly efficient electron injection from the DLC into the conducting polymer and a DLC/P3OT interface. (C) 2001 American Institute of Physics.
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页码：2437 / 2439
页数：3
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