TY - JOUR
T1 - Formation of Blue-Emitting Colloidal Si Quantum Dots through Pulsed Discharge of Si Strips in Distilled Water Medium
AU - Zhong, Longhai
AU - Gao, Xin
AU - Qiao, Jinchao
AU - Chen, Yan
AU - Zhang, Xueying
AU - Xiao, Zeqi
AU - Chen, Pengwan
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/3/2
Y1 - 2023/3/2
N2 - Si quantum dots (QDs) have received quantities of attention owing to their multiple outstanding properties, such as the size-dependent optical property, photothermal property, electronic property, and biocompatible property. Therefore, researchers have been committed to exploring preparation methods of Si QDs. In this study, we have demonstrated a novel route to prepare Si QDs through a pulsed wire discharge method using Si strips. The as-prepared samples were recovered, centrifuged, and characterized by various techniques, such as XRD, Raman spectroscopy, SEM, TEM, FTIR, UV-vis absorption, and PL spectra. Consequently, the purified samples are confirmed to be pure Si QDs in a size of 1.4-4.7 nm, with an average particle size of 2.76-2.92 nm. Furthermore, the spectral analysis reveals the blue-emitting characteristics of the obtained Si QDs owing to the small particle size. Our studies demonstrate an efficient and cost-effective approach to produce colloidal Si QDs through pulsed wire discharge, which possesses potential for large-scale production.
AB - Si quantum dots (QDs) have received quantities of attention owing to their multiple outstanding properties, such as the size-dependent optical property, photothermal property, electronic property, and biocompatible property. Therefore, researchers have been committed to exploring preparation methods of Si QDs. In this study, we have demonstrated a novel route to prepare Si QDs through a pulsed wire discharge method using Si strips. The as-prepared samples were recovered, centrifuged, and characterized by various techniques, such as XRD, Raman spectroscopy, SEM, TEM, FTIR, UV-vis absorption, and PL spectra. Consequently, the purified samples are confirmed to be pure Si QDs in a size of 1.4-4.7 nm, with an average particle size of 2.76-2.92 nm. Furthermore, the spectral analysis reveals the blue-emitting characteristics of the obtained Si QDs owing to the small particle size. Our studies demonstrate an efficient and cost-effective approach to produce colloidal Si QDs through pulsed wire discharge, which possesses potential for large-scale production.
UR - http://www.scopus.com/inward/record.url?scp=85148666969&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.2c07272
DO - 10.1021/acs.jpcc.2c07272
M3 - Article
AN - SCOPUS:85148666969
SN - 1932-7447
VL - 127
SP - 4168
EP - 4175
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 8
ER -