摘要
Herein,we report on surface plasmon(SP)-sensitive semitransparent inverted polymer photovoltaic(PV)devices that are based on multilayered material systems consisting of poly(3-hexylthiophene):fullerene-derivative bulk-heterojunction PV layers and thin gold or silver anodes.We demonstrate that these PV devices allow the simultaneous generation of both electrical power and SPs on their anodes for photoexcitation just above the optical absorption edge of the PV layers,resulting not only in attenuated total reflection,but also in attenuated photocurrent generation(APG)under the SP resonance(SPR)condition.Moreover,we also confirm that the biomolecular interaction of biotin–streptavidin on the PV devices can be precisely detected via apparent SPR angle shifts in the APG spectra,even without the need for complex attenuated total reflection configurations.We highlight our view that APG measurements made using these PV devices show great potential for the development of future generations of compact and highly sensitive SPR-based optical sensors.
基金
The authors thank H Takezoe for his careful reading and helpful comments on this paper.This work was supported by the Basic Science Research Program through National Research Foundations of Korea(NRF)Grant funded by the Korea Government(MSIP)(NRF-2010-0027963,2012R1A2A2A01015654 and 2014R1A2A1A10054643)
by Kwangwoon University(2014)
The authors also thank GC Kwon,JH Shin and J Choi for their helpful comments.
