Organic-inorganic sol-gel composites incorporating semiconductor nanocrystals for optical gain applications

Miri Kazes, Tsiala Saraidarov, Renata Reisfeld, Uri Banin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


A hybrid host material based on two metal-alkoxide derived ormosils for incorporation of highly emitting CdSe-based core/shell quantum dots (QDs) and quantum rods (QRs) was investigated. Optical gain measurements under nanosecond excitation were performed and tunable ASE was demonstrated for a range of temperatures. The CdSe/ZnS QDs used in this study were grown using the methods of colloidal NC synthesis utilizing high temperature pyrolysis of organometallic precursors in coordinating organic solvents. The QD/composite film was prepared by drop-casting from a solution mixture of the QDs and matrix precursors. The film was cured in an oven at 100°C for a few days. The resultant film was 35μm thick and had an optical density of 0.38 at the excitation wavelength of 532 nm. It was observed that the hybrid organic-inorganic matrix allows the incorporation of nanocrystals (NCs) at a relatively high volume ratio.

Original languageAmerican English
Pages (from-to)1716-1720
Number of pages5
JournalAdvanced Materials
Issue number17
StatePublished - 4 May 2009


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