Fine-tuning photorefractive properties of monolithic molecular materials

Single component photorefractive materials based on small molecules have been synthesized. The sidechains located in the electron-withdrawing group of these molecules were systematically changed in order to investigate their influence. It was demonstrated that the photorefractive performance of thes...

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Veröffentlicht in:Applied physics letters 2003-05, Vol.82 (20), p.3385-3387
Hauptverfasser: Hou, Zhanjia, You, Wei, Yu, Luping
Format: Artikel
Sprache:eng
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Zusammenfassung:Single component photorefractive materials based on small molecules have been synthesized. The sidechains located in the electron-withdrawing group of these molecules were systematically changed in order to investigate their influence. It was demonstrated that the photorefractive performance of these materials could be fine-tuned by changing the length of the sidechain. Excellent optical quality and photorefractive properties were obtained. A large net optical gain of 280 cm−1 at a low external field (38.3 V/μm) and a diffraction efficiency of 82% were observed at 780 nm. The results indicate that an optimum sidechain length exists for this type of molecules.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1575938