Nanoparticles of lead sulfide in porous glasses prepared by the sol-gel method

• Autorzy: Reisfeld R. , Sarajdarov T. , Minti H. , Wodnicka K.
• Konferencja: 6th Seminar Porous Glasses-Special Glasses, PGL 2002, Szklarska Poręba, 22-26.IX.2002 r.
• Języki publikacji: EN

Abstrakty

EN

PbS semiconductor nanoparticles were grown inside the matrices of zirconium oxide (ZrO2) and zirconium-silica-polyurethane (ZSUR) prepared by the sol-gel method. Zirconium ormosil included polyurethane used to control the growth and aggregation of PbS nanoparticles. The new matrix allows the incorporation of up to 40% PbS forming a characteristic structure of dendrite by reacting lead acetate with ammonium thiocyanate in the sol-gel matrix. The sol precursors of the matrix for ZSUR contain ZrO2 matrix solution, epoxy-silica-ormosil (ESOR) and diurethane siloxane (DURS) synthesized separately. The size of nanoparticles as determined by transmission electron microscopy (TEM) ranges between 2–4 nm for 20% PbS in zirconium oxide and 8–10 nm for 20% PbS in ZSUR matrices. The porosity of the glasses is determined using the nitrogen adsorption technique. The pore size for ZSUR doped with 2% of PbS as determined by BET is 1.54 nm. Quantum size effect was observed from the shifts of absorption and photoluminescence (PL).

Słowa kluczowe

EN

porous glass; lead sulfide; zirconium-silica-polyurethane; optical properties; PbS

PL

szkło porowate; siarczek ołowiu; właściwości optyczne; PbS

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2003
• Tom: Vol. 33, nr 1
• Strony: 61--73
• Opis fizyczny: Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Reisfeld R.

• Department of Inorganic and Analytical Chemistry, Hebrew University o f Jerusalem, 91940 Jerusalem, Israel

autor

Sarajdarov T.

• Department of Inorganic and Analytical Chemistry, Hebrew University o f Jerusalem, 91940 Jerusalem, Israel

autor

Minti H.

• Department of Inorganic and Analytical Chemistry, Hebrew University o f Jerusalem, 91940 Jerusalem, Israel

autor

Wodnicka K.

• University of Mining and Metallurgy, al. Adama Mickiewicza 30, 30-059, Kraków, Poland

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