Title :
Efficient migration of Mott-Wannier excitons to Frenkel excitons in hybrid organic/inorganic assembly of CdSe/ZnS nanocrystals in MDMO-PPV homopolymers
Author :
Nizamoglu, Sedat ; Sun, Xiaowei ; Demir, Hilmi Volkan
Author_Institution :
Dept. of Phys., Bilkent Univ., Ankara, Turkey
Abstract :
The authors presented efficient migration of Mott-Wannier excitons to Frenkel excitons via nonradiative energy transfer in our hybrid organic/inorganic assembly of CdSe/ZnS heteronanocrystals in MDMO-PPV homopolymer, reaching an efficiency level of 72.2%. By changing the donor-acceptor amounts, the authors demonstrated nonradiative energy transfer efficiency tuning in a controlled manner from 28.8% to 72.2%.
Keywords :
II-VI semiconductors; cadmium compounds; excitons; nanostructured materials; organic-inorganic hybrid materials; polymers; tight-binding calculations; wide band gap semiconductors; zinc compounds; CdSe-ZnS; Frenkel excitons; MDMO-PPV homopolymers; Mott-Wannier excitons; donor-acceptor amounts; heteronanocrystals; hybrid organic/inorganic assembly; migration; nonradiative energy transfer; Assembly; Energy exchange; Excitons; Nanocrystals; Nanotechnology; Polymers; Power engineering and energy; Spectroscopy; Time measurement; Zinc compounds;
Conference_Titel :
LEOS Annual Meeting Conference Proceedings, 2009. LEOS '09. IEEE
Conference_Location :
Belek-Antalya
Print_ISBN :
978-1-4244-3680-4
Electronic_ISBN :
1092-8081
DOI :
10.1109/LEOS.2009.5343410
