Dipole-Dipole Interaction Between A Fluorescent Dye and a Phosphorescent Dopant In Solid Thin Films: A Concentration and Excitation Intensity Study

Gabriel Ramos-Ortiz, Yuji Oki, B. Domercq, B. Kippelen

Research output: Contribution to conferencePaperpeer-review

Abstract

Here we report on the long-range dipole-dipole Förster energy transfer between the fluorescent dye 4,4′-N,N′-dicarbazole-biphenyl (CBP) and the phosphorescent organometallic complex fac tris(2-phenylpyridine) iridium(III) (Ir(ppy) 3). The study is carried out for both molecules dispersed in a polymer matrix forming a solid thin film. By studying the photoluminescence of these films with various concentrations of Ir(ppy) 3 (guest) and CBP (host) molecules at various optical excitation conditions and by comparing our experimental results with the predictions of a numerical model of the Förster transfer process, we determined the total efficiency of energy transfer and a Förster interaction radius of 3 nm for the pair CBP:Ir(ppy) 3 without having to use time-resolved techniques. From this result, we discuss the optimum dopant to guest ratios in solid films of the pair CBP:Ir(ppy) 3 for maximum energy transfer following optical excitation.

Original languageEnglish
Pages418-423
Number of pages6
Publication statusPublished - Dec 1 2002
EventIS and T's NIP18: International Conference On Digital Printing Technologies - San Diego, CA, United States
Duration: Sep 29 2002Oct 4 2002

Other

OtherIS and T's NIP18: International Conference On Digital Printing Technologies
CountryUnited States
CitySan Diego, CA
Period9/29/0210/4/02

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Computer Science Applications

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