Inkjet-printed organic photodiodes

Lilliu, Samuele, Böberl, Michaela, Sramek, Maria, Tedde, Sandro F., Macdonald, John Emyr ORCID: https://orcid.org/0000-0001-5504-1692 and Hayden, Oliver 2011. Inkjet-printed organic photodiodes. Thin Solid Films 520 (1) , pp. 610-615. 10.1016/j.tsf.2011.08.004

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Abstract

Inkjet-printed organic photodiodes are reported, which eliminate the need for photodiode patterning as compared to other solution-based fabrication techniques. Both interlayer and bulk heterojunction ink formulations are optimized to fabricate diodes with low dark currents of 2 μA/cm2 and high external quantum efficiencies of 68.5% at − 5 V reverse bias. The current–voltage characteristics of the printed devices are competitive with photodiodes fabricated with established solution based technologies, such as spray-coating or blading. A comparison of photodiodes fabricated with a variety of solution processes showed that dark current densities are not related to microscale bulk heterojunction roughness.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	Organic photodiode; Bulk heterojunction; Inkjet printing; Dark current
Publisher:	Elsevier
ISSN:	0040-6090
Last Modified:	19 Oct 2022 08:52
URI:	https://orca.cardiff.ac.uk/id/eprint/19342

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