Yayınlanmış 1 Ocak 2015 | Sürüm v1
Dergi makalesi Açık

Macrocrystals of Colloidal Quantum Dots in Anthracene: Exciton Transfer and Polarized Emission

  • 1. Tech Univ Dresden, Phys Chem, D-01062 Dresden, Germany

Açıklama

In this work, centimeter-scale macrocrystals of nonpolar colloidal quantum dots (QDs) incorporated into anthracene were grown for the first time. The exciton transfer from the anthracene host to acceptor QDs was systematically investigated, and anisotropic emission from the isotropic QDs in the anthracene macrocrystals was discovered. Results showed a decreasing photoluminescence lifetime of the donor anthracene, indicating a strengthening energy transfer with increasing QD concentration in the macrocrystals. With the anisotropy study, QDs inside the anthracene host acquired a polarization ratio of similar to 1.5 at 0 degrees collection angle, and this increases to similar to 2.5 at the collection angle of 60 degrees. A proof-of-concept application of these excitonic macrocrystals as tunable color converters on light-emitting diodes was also demonstrated.

Dosyalar

bib-dcfc91e2-7e28-4e67-91b4-e394079994fe.txt

Dosyalar (246 Bytes)

Ad Boyut Hepisini indir
md5:a38950495e783c58180bd915f3b0b301
246 Bytes Ön İzleme İndir