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Figure S9A: UPS and IPES data of 20nm layer C60 deposited on two different ITO/PTAA/perovskite samples,
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The incorporation of even small amounts of strontium (Sr) into lead-based quadruple cation hybrid perovskite solar cells results in a systematic increase of the open circuit voltage (Voc) in pin-type perovskite solar cells. We demonstrate via transient and absolute photoluminescence (PL) experiments how the incorporation of Sr significantly reduces...
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... we refrained from measurements of intermediate C60 coverage to minimize eventual sample changes due to prolonged illumination with UV light, we can yet draw a realistic picture of the energy level alignment based on prior art, as follows. Since the electron affinity of C60 is in the range of 4.0 eV 6 to 4.9 eV (our measurements, Fig. S9A in the SI), contact with a substrate of comparable work function will result in Fermi level pinning, i.e., electron transfer from the substrate to the acceptor C 60 and thus partial filling of its LUMO manifold 7 . In our case the substrate is the perovskite film, and the electron transfer to the molecular layer will result in reduced ...Context 2
... we refrained from measurements of intermediate C60 coverage to minimize eventual sample changes due to prolonged illumination with UV light, we can yet draw a realistic picture of the energy level alignment based on prior art, as follows. Since the electron affinity of C60 is in the range of 4.0 eV 6 to 4.9 eV (our measurements, Fig. S9A in the SI), contact with a substrate of comparable work function will result in Fermi level pinning, i.e., electron transfer from the substrate to the acceptor C 60 and thus partial filling of its LUMO manifold 7 . In our case the substrate is the perovskite film, and the electron transfer to the molecular layer will result in reduced ...Similar publications
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