A planar organic near infrared light detector based on bulk heterojunction of a heteroquaterphenoquinone and poly[2-methoxy-5-,2′-ethyl-hexyloxy)-1, 4-phenylene vinylene

被引：28
|
作者：
Agostinelli, T. [1 ]
Caironi, M. [1 ]
Natali, D. [1 ]
Sampietro, M. [1 ]
Dassa, G. [2 ,3 ]
Canesi, E. V. [2 ,3 ]
Bertarelli, C. [2 ,3 ]
Zerbi, G. [2 ,3 ]
Cabanillas-Gonzalez, J. [4 ]
De Silvestri, S. [4 ]
Lanzani, G. [4 ]
机构：
[1] Politecn Milan, Dipartimento Elettr & Informaz, Unita IIT, I-20133 Milan, Italy
[2] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20133 Milan, Italy
[3] INSTM Italian Interuniv Consortium Mat Sci & Tech, I-50121 Florence, Italy
[4] Politecn Milan, Dipartimento Fis, ULTRAS, INFM CNR, I-20133 Milan, Italy
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 11期
关键词：
D O I：
10.1063/1.3033376
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Planar organic detectors for the near infrared region of the light spectrum have been realized, processing from solution the quinoid molecule 5,5'-bis(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadiene-1-ylidene )-5,5'-dihydro-2,2'-bithiophene (QBT), which shows a peculiar absorption at 680 nm. Sensitization of the active material was obtained by creating a bulk donor-acceptor interface with poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene], which acts as hole acceptor. Photoexcitation and relaxation dynamics in pristine materials and bulk heterojunction have been investigated by means of pump-probe measurements, revealing charge transfer from QBT to polymer and efficient energy transfer the other way round. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.3033376]
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页数：5
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