Enhancement of device performance of organic solar cells by an interfacial perylene derivative layer

We report that device performance of organic solar cells consisting of zinc phthalocyanine and fullerene (C60) can be enhanced by insertion of a perylene derivative interfacial layer between fullerene and bathocuproine (BCP) exciton blocking layer (EBL). The morphology of the BCP is influenced by th...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2010-05, Vol.2 (5), p.1390-1394
Main Authors: Kim, Inho, Haverinen, Hanna M, Li, Jian, Jabbour, Ghassan E
Format: Article
Language:English
Subjects:
Electric Power Supplies
Equipment Design
Equipment Failure Analysis
Materials Testing
Organic Chemicals - chemistry
Perylene - chemistry
Solar Energy
Surface Properties
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Summary:We report that device performance of organic solar cells consisting of zinc phthalocyanine and fullerene (C60) can be enhanced by insertion of a perylene derivative interfacial layer between fullerene and bathocuproine (BCP) exciton blocking layer (EBL). The morphology of the BCP is influenced by the underlying N,N′-dihexyl-perylene-3,4,9,10-bis(dicarboximide) (PTCDI-C6), which promotes migration of the cathode metal into the BCP layer. Insertion of a PTCDI-C6 layer between fullerene and BCP layers enhances the power conversion efficiency to 2.5%, an improvement of 32% over devices without PTCDI-C6 layer. The enhancement in device performance by insertion of PTCDI-C6 is attributed to a reduction in series resistance due to promoted metal migration into BCP and optimized optical interference effects in multilayered devices.
ISSN:1944-8244
1944-8252
DOI:10.1021/am100039m