Ippen, C.C.IppenGreco, T.T.GrecoKim, Y.Y.KimKim, J.J.KimOh, M.S.M.S.OhHan, C.J.C.J.HanWedel, A.A.Wedel2022-03-042022-03-042014https://publica.fraunhofer.de/handle/publica/23549410.1016/j.orgel.2013.11.0032-s2.0-84888103363Quantum dots are a highly attractive class of materials for the use in light-emitting devices, since they allow high color purity, facile tunability and solution-processing methods. Here, zinc selenide QDs are investigated for their suitability as emissive material in cadmium-free blue QD-LEDs. By adjusting the stoichiometry in the synthesis the emission wavelength can be tuned in the range of 390435 nm. For the assembly of the QD-LED, the device setup was adjusted to the low-lying ZnSe valence band energy by choosing a suitable hole-transport material. A first promising QD-LED result is achieved showing the characteristic narrow QD emission peak with a luminance of 25 cd/m².en621journal article