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

Abstract: The influence of electric field E → on the precipitation and optical properties of PbSe quantum dots (QDs) in borosilicate glasses was investigated. Diameters of the PbSe QDs increased as E → 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 E → to 0.9 kV/mm caused red‐shift of the absorption and photoluminescence (PL) bands of QDs. Application of E → 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. [ABSTRACT FROM AUTHOR]