Solution processed small molecule organic interfacial layers for low dark current polymer photodiodes

被引：56

作者：

Valouch, Sebastian ^{[1
,2
]}

Hoenes, Christian ^{[1
,2
,3
]}

Kettlitz, Siegfried W. ^{[1
,2
]}

Christ, Nico ^{[1
,2
]}

Do, Hung ^{[1
,2
]}

Klein, Michael F. G. ^{[1
,2
]}

Kalt, Heinz ^{[2
,3
]}

Colsmann, Alexander ^{[1
,2
]}

Lemmer, Uli ^{[1
,2
]}

机构：

[1] KIT, Light Technol Inst, D-76131 Karlsruhe, Germany

[2] KIT, DFG Ctr Funct Nanostruct, D-76131 Karlsruhe, Germany

[3] KIT, Inst Appl Phys, D-76131 Karlsruhe, Germany

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 11期

关键词：

Organic photodetector; Organic photodiode; Interfacial layer; Solution process; ENERGY-LEVEL ALIGNMENT; SOLAR-CELLS; HIGH-EFFICIENCY; ELECTROLUMINESCENT DEVICES; PHOTODETECTORS; CONFINEMENT; DIODES; FILMS; TPBI;

D O I：

10.1016/j.orgel.2012.07.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate a small molecule solution processed hole interfacial layer approach to improve the dark current characteristics of polymer photodiodes. The two hole blocking materials under investigation 3-phenyl-4(1'-naphthyl)-5-phenyl-1,2.4-triazole (TAZ) and 2-[3,5-bis(1-phenylbenzimidazol-2-yl)phenyl]-1-phenylbenzimidazole (TPBi) are spincoated from ethanol as an orthogonal solvent on top of a P3HT:PCBM active layer. We reduce the dark current at a bias voltage of -1 V by a factor of 17.2 by introducing a TAZ interfacial layer while keeping the responsivity unchanged. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：2727 / 2732

页数：6

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