Auflistung nach Schlagwort "Excitons"

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  • Exciton fine structure and biexciton binding energy in single self-assembled InAs/AIAs quantum dots 
    Sarkar, D.; Van Der Meulen, H.P.; Calleja, J.M.; Becker, J.M.; Haug, Rolf J.; Pierz, Klaus (College Park, MD : American Institute of Physics, 2006)
    The exciton and biexciton emissions of a series of single quantum dots of InAs in an AlAs matrix have been studied. These emissions consist of linear cross polarized doublets showing large values of both the biexciton ...
  • Independent tuning of excitonic emission energy and decay time in single semiconductor quantum dots 
    Höfer, B.; Zhang, J.; Wildmann, J.; Zallo, E.; Trotta, R.; Ding, Fei; Rastelli, A.; Schmidt, O.G. (College Park, ML : American Institute of Physics Inc., 2017)
    Independent tuning of emission energy and decay time of neutral excitons confined in single self-assembled In(Ga)As/GaAs quantum dots is achieved by simultaneously employing vertical electric fields and lateral biaxial ...
  • Isotope Effects in Photocatalysis: An Underexplored Issue 
    Günnemann, Carsten; Bahnemann, Detlef W.; Robertson, Peter K. J. (Washington, DC : ACS Publications, 2021)
    In order to improve the performance of well-established photocatalysts and to develop new potential photocatalyst materials, an understanding of the underlying mechanisms of photocatalytic reactions is of the utmost ...
  • Magneto-photoluminescence spectroscopy of single InAs/AlAs quantum dots 
    Sarkar, D.; Van Der Meulen, H.P.; Calleja, J.M.; Meyer, J.M.; Haug, Rolf J.; Pierz, K. (Bristol : IOP Publishing Ltd., 2010)
    We present non-resonant, polarization-resolved magneto-photoluminescence measurements up to 12 T on single InAs/AlAs quantum dots. We observe typical g-factors between 1 and 2, very low diamagnetic shifts due to strong ...
  • Photoexcitation of PbS nanosheets leads to highly mobile charge carriers and stable excitons 
    Lauth, Jannika; Failla, Michele; Klein, Eugen; Klinke, Christian; Kinge, Sachin; Siebbeles, Laurens D.A. (Cambridge : Royal Society of Chemistry, 2019)
    Solution-processable two-dimensional (2D) semiconductors with chemically tunable thickness and associated tunable band gaps are highly promising materials for ultrathin optoelectronics. Here, the properties of free charge ...
  • Thermodynamic origin of the slow free exciton photoluminescence rise in GaAs 
    Beck, Michael; Hübner, Jens; Oestreich, Michael; Bieker, S.; Henn, T.; Kiessling, T.; Ossau, W.; Molenkamp, L.W. (College Park, MD : American Physical Society, 2016)
    We use time-resolved photoluminescence (TRPL) spectroscopy to unequivocally clarify the microscopic origin of the nanosecond free exciton photoluminescence rise in GaAs at low temperatures. In crucial distinction from ...
  • Towards bose-einstein condensation of semiconductor excitons: The biexciton polarization effect 
    Hägele, D.; Pfalz, S.; Oestreich, Michael (College Park, MD : American Physical Society, 2009)
    We theoretically predict a strong influence of stimulated exciton-exciton scattering on semiconductor luminescence. The stimulated scattering causes circularly polarized instead of unpolarized emission at the biexciton ...