Observation of efficient transfer from Mott–Wannier to Frenkel excitons in a hybrid semiconductor quantum dot/polymer composite at room temperatureSedat Nizamoglu, Xiao Wei Sun, and Hilmi Volkan Demir

摘要

Efficient conversion from Mott–Wannier to Frenkel excitons is observed at room temperature.nThe time-resolved photoluminescence shows that the energy transfer rate and efficiency reachn0.262 ns−1nand 80.9%, respectively. The energy transfer is enabled by strong dipole-dipolencoupling in a hybrid inorganic/organic system of CdSe/ZnS core/shell heteronanocrystal andnpolyu00042-methoxy-5-u00023,7-dimethyl-octyloxyu0003-1,4-phenylenevinyleneu0005 homopolymer composite, andnthe measured energy transfer efficiencies are consistent with the analytical model. © 2010 AmericannInstitute of Physics. u0004doi:10.1063/1.3529450