Multilayer organic solar cells with wet-processed polymeric bulk heterojunction film and dry-processed small molecule films

Here, we report multilayer organic solar cells fabricated using a mix of solution (wet) and thermal evaporation (dry) techniques, which consist of indium-tin oxide (ITO), poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), poly(3-hexylthiophene) (P3HT):1-(3-methoxycarbonyl)-propyl-1...

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Bibliographic Details
Published in:Applied physics letters 2008-03, Vol.92 (9), p.093306-093306-3
Main Authors: Kim, Youngkyoo, Shin, Minjung, Lee, Inhyuk, Kim, Hwajeong, Heutz, Sandrine
Format: Article
Language:English
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Summary:Here, we report multilayer organic solar cells fabricated using a mix of solution (wet) and thermal evaporation (dry) techniques, which consist of indium-tin oxide (ITO), poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), poly(3-hexylthiophene) (P3HT):1-(3-methoxycarbonyl)-propyl-1-phenyl- ( 6 , 6 ) C 61 (PCBM), C 60 , bathocuproine (BCP), and aluminum layers. Results show that the short circuit current density ( J SC ) of a ITO ∕ PEDOT : PSS ∕ C 60 /BCP/Al device was greatly improved by inserting a pristine P3HT light-absorbing layer between the PEDOT:PSS and C 60 layers. Addition of PCBM to the P3HT layer lowered the J SC in the devices compared to the pristine P3HT layer and, in general, the J SC continued to decline with increasing PCBM content.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2890169