XPS studies of zirconium complexes on polymer surfaces

Palmer, Dasha; Straughan, B. P.; Treverton, J. A.

doi:10.1016/0169-4332(93)90128-x

Cited by 1 publication

(1 citation statement)

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“…The thin film sample shows similar O 1 s peak, and the portion of non-four-coordination is 15%, which means there is no decomposition occurred. As shown in Figure 3(d) , the C 1 s peaks of ZrAcac powder are located at 284.7 eV, which is assigned to the carbon in C-H/C-C group 52 , the peak at 286.7 eV corresponds to the carbon in delocalized C = O of ligand cycle 52 , and the weak shoulder at 288.3 eV attributes to the absorbed CO 2 from ambient atmosphere 52 . The atomic ratio of C 1 s (286.7 eV) and C 1 s (284.7 eV) peaks is 1:3.50, which is very close to the ratio of 1:3.54 for thin film sample.…”

Section: Resultsmentioning

confidence: 99%

High performance polymer solar cells with as-prepared zirconium acetylacetonate film as cathode buffer layer

Tan

Wang

et al. 2014

Sci Rep

170

114

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Low-work-function active metals are commonly used as cathode in polymer solar cells (PSCs), but sensitivity of the active metals towards moisture and oxygen results in poor stability of the devices. Therefore, solution-proceessable and stable cathode buffer layer is of great importance for the application of PSCs. Here we demonstrate high performance PSCs by employing as-prepared zirconium acetylacetonate (a-ZrAcac) film spin-cast from its ethanol solution as cathode buffer layer. The PSCs based on a low bandgap polymer PBDTBDD as donor and PC60BM as acceptor with a-ZrAcac/Al cathode demonstrated an average power conversion efficiency (PCE) of 8.75% which is significantly improved than that of the devices with traditional Ca/Al cathode. The improved photovoltaic performance is benefitted from the decreased series resistance and enhanced light harvest of the PSCs with the a-ZrAcac/Al cathode. The results indicate that a-ZrAcac is a promising high performance cathode buffer layer for fabricating large area flexible PSCs.

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Section: Resultsmentioning

confidence: 99%