A facile fabrication method to produce bio- compatible semiconductor Quantum Dots encapsulated in high quality and thick thermal oxide is presented. The process employs sonication of porous Si/SiO2 structures to produce flakes with dimension in the 50–200 nm range. These flakes show a coral-like SiO2 skeleton with Si nanocrystals embedded in and are suitable for functional- ization with other diagnostic or therapeutic agents. Silicon is a biocompatible material, efficiently cleared from the human body. The Photoluminescence emission falls in the transparency window for living tissues and is found to be bright and stable for hours in the aggressive biological environment.
Silica-Encapsulated Efficient and Stable Si Quantum Dots with High Biocompatibility / Amato, Giampiero. - In: NANOSCALE RESEARCH LETTERS. - ISSN 1931-7573. - 5:(2010), pp. 1156-1160. [10.1007/s11671-010-9619-9]
Silica-Encapsulated Efficient and Stable Si Quantum Dots with High Biocompatibility
AMATO, GIAMPIERO
2010
Abstract
A facile fabrication method to produce bio- compatible semiconductor Quantum Dots encapsulated in high quality and thick thermal oxide is presented. The process employs sonication of porous Si/SiO2 structures to produce flakes with dimension in the 50–200 nm range. These flakes show a coral-like SiO2 skeleton with Si nanocrystals embedded in and are suitable for functional- ization with other diagnostic or therapeutic agents. Silicon is a biocompatible material, efficiently cleared from the human body. The Photoluminescence emission falls in the transparency window for living tissues and is found to be bright and stable for hours in the aggressive biological environment.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
