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All solution-processed organic photocathodes with increased efficiency and stability via the tuning of the hole-extracting layer †

Abstract : Photoelectrodes based on solution-processed organic semiconductors are emerging as low-cost alternatives to crystalline semiconductors and platinum. In this work, the performance and stability of P3HT:PCBM\MoS 3-based photocathodes are considerably improved by changing the hole-extracting layer (HEL). Oxides such as reduced graphene oxide, nickel oxide or molybdenum oxide are deposited via solution processes. With MoO x , a photocurrent density of 2 mA cm À2 during 1 h is obtained with the processing temperature lower than 150 C – thus compatible with flexible substrates. Furthermore, we show that the performances are directly correlated with the work function of the HEL material, and the comparison with solid-state solar cells shows that efficient HELs are not the same for the two types of devices.
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https://hal-cea.archives-ouvertes.fr/cea-01332015
Contributor : Serge Palacin <>
Submitted on : Wednesday, June 15, 2016 - 10:23:32 AM
Last modification on : Thursday, March 5, 2020 - 6:23:01 PM

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T Bourgeteau, D Tondelier, B Geffroy, R Brisse, S Campidelli, et al.. All solution-processed organic photocathodes with increased efficiency and stability via the tuning of the hole-extracting layer †. Journal of Materials Chemistry A, Royal Society of Chemistry, 2016, 4, pp.4831-4839. ⟨10.1039/c6ta01320a⟩. ⟨cea-01332015⟩

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