최종훈
2018-03-15T12:51:16Z
2018-03-15T12:51:16Z
2014-01
Bulletin of the Korean Chemical Society, 2014, Vol. 35, No. 1, p.35-38
0253-2964
1229-5949
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCGMCS_2014_v35n1_35
http://hdl.handle.net/20.500.11754/47481
Herein, we report on the preparation of red fluorescent Si nanoparticles stabilized with styrene. Nano-sized Si particles emit fluorescence under UV excitation, which could be used to open up new applications in the fields of optics and semi-conductor research. Unfortunately, conventional methods for the preparation of red fluorescent Si nanoparticles suffer from the lack of a fully-established standard synthesis protocol. A common initial approach during the preparation of semi-conductors is the etching of crystalline Si wafers in a HF/ethanol/ H2O bath, which provides a uniformly-etched surface of nanopores amenable for further nano-sized modifications via tuning of various parameters. Subsequent sonication of the etched surface crumbles the pores on the wafer, resulting in the dispersion of particles into the solution. In this study, we use styrene to occupy these platforms to stabilize the surface. We determine that the liberated silicon particles in ethanol solution interact with styrene, resulting in the substitution of Si-H bonds with those of Si-C as determined via UV photo-catalysis. The synthesized styrene-coated Si nanoparticles exhibit a stable, bright, red fluorescence under excitation with a 365 nm UV light, and yield approximately 100 mg per wafer with a synthesis time of 2 h. We believe this protocol could be further expanded as a cost-effective and high-throughput standard method in the preparation of red fluorescent Si nanoparticles.
This work is supported by KIST Global Research Laboratory (K-GRL) program (2Z04150) and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. 2008-0061856) and (No. 2013R1A1A1012653).
대한화학회, 2014.
Silicon
Nanoparticles
Styrene
Surface functionalization
Fluorescence
Electrochemical Synthesis of Red Fluorescent Silicon Nanoparticles
Article
10.5012/bkcs.2014.35.1.35
35-38
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Choi, Jonghoon
2014026628
S
GRADUATE SCHOOL[S]
DEPARTMENT OF BIONANOTECHNOLOGY
jonghchoi