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Issue 11, 2015
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Electrophoretic deposited oxide thin films as charge transporting interlayers for solution-processed optoelectronic devices: the case of ZnO nanocrystals

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Abstract

A promising fabrication method of electron transporting interlayers for solution-processed optoelectronic devices by electrophoretic deposition (EPD) of colloidal zinc oxide (ZnO) nanocrystals was demonstrated. A low voltage of 3–5 V and a short deposition time of 40 s at room temperature were found to be sufficient to generate dense and uniform ZnO thin films. The EPD ZnO nanocrystal films were applied as ETLs for inverted organic solar cell and polymer light emitting diodes (PLEDs). By optimizing the EPD processing of ZnO nanocrystal electron transporting layers (ETLs), inverted organic solar cells based on [3,4-b]-thiophene/benzodithiophene (PTB7): [6-6]-phenyl-C71-butyric acid methyl ester (PC71BM) and poly(3-hexylthiophene) (P3HT): [6-6]-phenyl-C61-butyric acid methyl ester (PC61BM) with an average PCE of 8.4% and 4.0% were fabricated. In combination with the PLEDs and flexible devices results, we conclude that the EPD processed ZnO nanocrystal thin films can serve as high quality ETLs for solution-processed optoelectronic devices.

Graphical abstract: Electrophoretic deposited oxide thin films as charge transporting interlayers for solution-processed optoelectronic devices: the case of ZnO nanocrystals

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Publication details

The article was received on 04 Sep 2014, accepted on 24 Dec 2014 and first published on 24 Dec 2014


Article type: Communication
DOI: 10.1039/C4RA09765C
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Citation: RSC Adv., 2015,5, 8216-8222
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    Electrophoretic deposited oxide thin films as charge transporting interlayers for solution-processed optoelectronic devices: the case of ZnO nanocrystals

    S. Bai, S. He, Y. Jin, Z. Wu, Z. Xia, B. Sun, X. Wang, Z. Ye, F. Gao, S. Shao and F. Zhang, RSC Adv., 2015, 5, 8216
    DOI: 10.1039/C4RA09765C

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