Effectiveness of p-dopants in an organic hole transporting material

被引：86

作者：

Lee, Jae-Hyun

Leem, Dong-Seok

Kim, Hyong-Jun

Kim, Jang-Joo ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 12期

关键词：

copper compounds; current density; doping; hole mobility; impurity states; infrared spectra; molybdenum compounds; organic compounds; rhenium compounds; visible spectra; work function; LIGHT-EMITTING-DIODES; INSULATOR-SEMICONDUCTOR DIODES; ELECTROLUMINESCENT DEVICES; INJECTION LAYER;

D O I：

10.1063/1.3107267

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the effectiveness of p-dopants to generate holes in a hole transporting material by comparing the absorption in visible-near-infrared and infrared regions and current density-voltage characteristics. CuI, MoO3, and ReO3 having different work functions were doped in a hole transporting organic material, 4,4('),4(')-tris(N-(2-naphthyl)-N-phenylamino)-triphenylamine (2TNATA). Formation of charge transfer (CT) complexes increases linearly with increasing doping concentration for all the dopants. Dopants with higher work function (ReO3>MoO3>CuI) are more effective in the formation of CT complexes and in the generation of the charges in the doped films.

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页数：3

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