NDLI: Polymer-based photocathodes with a solution-processable cuprous iodide anode layer and a polyethyleneimine protective coating

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Polymer-based photocathodes with a solution-processable cuprous iodide anode layer and a polyethyleneimine protective coating

Content Provider	Semantic Scholar
Author	Rojas, Hansel Comas Bellani, Sebastiano Fumagalli, Francesco Tullii, Gabriele Leonardi, Silvia Shizue Mayer, Matthew T. Schreier, Marcel Graetzel, Michael Lanzani, Guglielmo Fonzo, Fabio Di Antognazza, Maria Rosa
Copyright Year	2016
Abstract	Organic semiconductors have been proven to be suitable for efficient photovoltaic generation during the last decade but have been scarcely assessed as photoelectrochemical devices. In this work we present the fabrication and characterization of a new efficient hybrid organic/inorganic photocathode for hydrogen evolution showing both a positive onset potential (+0.702 V vs. RHE) and a maximum power point (+0.303 V vs. RHE). We demonstrate that a conventional P3HT:PCBM bulk heterojunction architecture enclosed between a solution-processed cuprous iodide hole selective layer and a Pt-decorated nanostructured TiO2 layer can efficiently photogenerate hydrogen under acidic conditions under simulated 1 Sun illumination. This architecture showed initial photocurrents as high as 8 mA cm−2 at 0 V vs. RHE, IPCE above 50%, 100% faradaic efficiency and an ideal ratiometric power-saved figure of merit equal to 1.21%. Finally, with the addition of a solution-processed polyethyleneimine protective coating, we improved the device stability. This work paves the way to the use of hybrid organic/inorganic photocathodes for efficient solar hydrogen generation.
Starting Page	3710
Ending Page	3723
Page Count	14
File Format	PDF HTM / HTML
DOI	10.1039/C6EE01655C
Volume Number	9
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2016/ee/c6ee01655c
Alternate Webpage(s)	https://pubs.rsc.org/en/content/getauthorversionpdf/C6EE01655C
Alternate Webpage(s)	http://www.rsc.org/suppdata/c6/ee/c6ee01655c/c6ee01655c1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C6EE01655C
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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