Electric field‐assisted precipitation of lead selenide quantum dots in borosilicate glass

• DOI: 10.1111/jace.15738
• Publication Date: 2018-05-05T09:00:02Z
• Authors: Belay Brehane Tes...; Byoungjin So; Jong Heo
• Keywords: 0103 physical sciences; photoluminescence; TEMPERATURE; 01 natural sciences; VISCOSITY; lead selenide; electric field

AbstractThe influence of electric field on the precipitation and optical properties of PbSe quantum dots (QDs) in borosilicate glasses was investigated. Diameters of the PbSe QDs increased as was increased from 0.0 to 0.6 kV/mm even at the same subsequent heat treatment at 510°C for 2 hours. Increase in to 0.9 kV/mm caused red‐shift of the absorption and photoluminescence (PL) bands of QDs. Application of also led to decreases in viscosities that accelerated diffusion of ions; this phenomenon led to the formation of large QDs and resulted in the red‐shifts of the absorption and PL bands. Increase in the temperature due to Joule heating was ~38°C that led to an observed decrease in viscosities.