Title :
Room-temperature, high-efficiency conversion of Mott-Wannier excitons to Frenkel excitons in hybrid semiconductor quantum dot/polymer composites
Author :
Nizamoglu, Sedat ; Sun, Xiao Wei ; Demir, Hilmi Volkan
Author_Institution :
Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey
Abstract :
Efficient conversion from Mott-Wannier to Frenkel excitons at room temperature is observed in hybrid inorganic/organic composites of CdSe/ZnS core/shell heteronanocrystals in MDMO-PPV homopolymers at a rate of 0.2628 ns-1 with an efficiency of 80.9%.
Keywords :
II-VI semiconductors; cadmium compounds; excitons; nanocomposites; organic-inorganic hybrid materials; polymers; semiconductor quantum dots; wide band gap semiconductors; zinc compounds; CdSe-ZnS; Frenkel excitons; MDMO-PPV homopolymers; Mott Wannier excitons; core-shell heteronanocrystals; hybrid inorganic-organic composites; hybrid semiconductor quantum dot-polymer composites; room-temperature high-efficiency conversion; temperature 293 K to 298 K; Energy exchange; Excitons; Interconnected systems; Photoluminescence; Physics; Polymers; Temperature measurement;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
