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Journal of Materials
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2015
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Article
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Fig 3
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Research Article
Solution-Processed rGO/AgNPs/rGO Sandwich Structure as a Hole Extraction Layer for Polymer Solar Cells
Figure 3
(a) UV-Vis spectra of CRG, HEL, and AgNPs. (b) UPS spectra of CRG and HEL.
(a)
(b)