We report the observation of extremely efficient energy transfer (greater than 99%) in an organic-inorganic hybrid quantum-well structure consisting of perovskite-type lead bromide well layers and naphthalene-linked ammonium barrier layers. Time-resolved photoluminescence measurements confirm that the transfer is triplet-triplet Dexter-type energy transfer from Wannier excitons in the inorganic well to the triplet state of naphthalene molecules in the organic barrier. Using measurements in the 10-300 K temperature range, we also investigated the temperature dependence of the energy transfer.

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Das Pyrazin‐di‐N‐oxid (I) liefert bei der Umsetzung mit Phosphoroxychlorid eine Reihe von Kern‐ und Methylgruppen‐chlorierten Derivaten (II)‐(VI).

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