NDLI: Low-temperature, solution-processed molybdenum oxide hole-collection layer for organic photovoltaics

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Low-temperature, solution-processed molybdenum oxide hole-collection layer for organic photovoltaics

Content Provider	Semantic Scholar
Author	Hammond, Scott R. Meyer, Jens Dr. Widjonarko, Nicodemus Edwin Ndione, Paul F. Sigdel, Ajaya K. García, Andrés Miedaner, Alexander Lloyd, Matthew T. Kahn, Antoine Ginley, David S. Berry, Joseph J. Olson, Dana C.
Copyright Year	2012
Abstract	We have utilized a commercially available metal–organic precursor to develop a new, low-temperature, solution-processed molybdenum oxide (MoOx) hole-collection layer (HCL) for organic photovoltaic (OPV) devices that is compatible with high-throughput roll-to-roll manufacturing. Thermogravimetric analysis indicates complete decomposition of the metal–organic precursor by 115 °C in air. Acetonitrile solutions spin-cast in a N2 atmosphere and annealed in air yield continuous thin films of MoOx. Ultraviolet, inverse, and X-ray photoemission spectroscopies confirm the formation of MoOx and, along with Kelvin probe measurements, provide detailed information about the energetics of the MoOx thin films. Incorporation of these films into conventional architecture bulk heterojunction OPV devices with poly(3-hexylthiophene) and [6,6]-phenyl-C61 butyric acid methyl ester afford comparable power conversion efficiencies to those obtained with the industry-standard material for hole injection and collection: poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). The MoOx HCL devices exhibit slightly reduced open circuit voltages and short circuit current densities with respect to the PEDOT:PSS HCL devices, likely due in part to charge recombination at Mo5+ gap states in the MoOx HCL, and demonstrate enhanced fill factors due to reduced series resistance in the MoOx HCL.
Starting Page	3249
Ending Page	3254
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1039/C2JM14911G
Volume Number	22
Alternate Webpage(s)	http://www.rsc.org/suppdata/jm/c2/c2jm14911g/c2jm14911g.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C2JM14911G
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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