Title :
Two-dimensional excitons in a layered-perovskite-type crystal (C/sub 6/H/sub 13/NH/sub 3/)/sub 2/PbI/sub 4/
Author :
Tanaka, K. ; Sano, K. ; Takahashi, T. ; Kondo, T.
Author_Institution :
Dept. of Mater. Sci., Univ. of Tokyo, Japan
Abstract :
Summary form only given. It has been found that the lowest-energy exciton in (C/sub 6/H/sub 13/NH/sub 3/)/sub 2/PbI/sub 4/ is so stable that the excitonic absorption peaks are clearly observable even at room temperature. It has been shown by four-wave-mixing (FWM) spectroscopy that it has large /spl chi//sup (3)/ value (10/sup -6/ esu) and fast response time (<7 ps) at the exciton resonance, and that the exciton-exciton interactions play an important role in the FWM processes.
Keywords :
electroabsorption; excitons; multiwave mixing; optical films; organic compounds; two-photon spectra; visible spectra; (C/sub 6/H/sub 13/NH/sub 3/)/sub 2/PbI/sub 4/; 7 ps; FWM processes; exciton resonance; exciton-exciton interactions; excitonic absorption peaks; fast response time; four-wave-mixing spectroscopy; layered-perovskite-type crystal; room temperature; two-dimensional excitons; Electroabsorption; Excitons; Optical films; Optical mixing; Optical spectroscopy; Organic compounds;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031228
