Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최종훈 | - |
dc.date.accessioned | 2016-12-06T02:07:18Z | - |
dc.date.available | 2016-12-06T02:07:18Z | - |
dc.date.issued | 2015-05 | - |
dc.identifier.citation | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.54, n.22, Page. 5982-5989 | en_US |
dc.identifier.issn | 0888-5885 | - |
dc.identifier.uri | http://pubs.acs.org/doi/abs/10.1021/acs.iecr.5b00446 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/24699 | - |
dc.description.abstract | A simple way of preparing fluorescent silicon nanoparticles (SiNPs) with a mean diameter of similar to 5 nm was demonstrated from used silicon wafers. Anodic etching of used wafers performed in a customized electrochemical cell produced H-terminated, nano- and micropores on the wafer surface, and SiNPs were attained by mechanically crumbling the nano-/microporous Si surface structures on the etched wafers in an ultrasonic bath. The obtained SiNPs were then re-etched in different ratios of HF/HNO3 acid mixture to produce different PL intensities, sizes, and yields. When the particle sizes were decreased by adjusting the experimental conditions (e.g., strength of the acid mixture, reaction time), the PL spectra from etched SiNPs were also shifted from red to blue, indicating the quantum confinement effect from the nanoparticles. Typically, blue-emitting SiNPs were observed with an average diameter of 2.7 nm and a yield of 0.3 mg/cm(2) of used wafers. Re-etched SiNPs were dialyzed by a 1K-dialysis membrane for purification and for potential use in bioapplications. The efficient method of preparing fluorescent nanoparticles from used monocrystalline Si wafers was demonstrated with a high production yield. The produced particles showed outstanding physical and chemical properties, indicating the applicability of these materials in semiconductor research and bioapplications. | en_US |
dc.description.sponsorship | The authors thank Dr. Taeho Kim at Seoul National University for his assistance with TEM. This work was supported by the research fund of Hanyang University (HY-2014-2082) a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI14C3266). This work was also funded by NSF East Asia and Pacific Summer Institutes (NSF EAPSI 1414982, www.nsf.gov/eapsi). | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | QUANTUM DOTS | en_US |
dc.subject | POROUS SILICON | en_US |
dc.subject | BIOLOGICAL APPLICATIONS | en_US |
dc.subject | PLASMA SYNTHESIS | en_US |
dc.subject | CANCER-CELLS | en_US |
dc.subject | NANOCRYSTALS | en_US |
dc.subject | PHOTOLUMINESCENCE | en_US |
dc.subject | LUMINESCENCE | en_US |
dc.subject | HYDROSILYLATION | en_US |
dc.subject | PASSIVATION | en_US |
dc.title | Simple Preparation of Fluorescent Silicon Nanoparticles from Used Si Wafers | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acs.iecr.5b00446 | - |
dc.relation.page | 1-8 | - |
dc.relation.journal | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | - |
dc.contributor.googleauthor | Hwang, Jangsun | - |
dc.contributor.googleauthor | Jeong, Yoon | - |
dc.contributor.googleauthor | Lee, Kwan Hong | - |
dc.contributor.googleauthor | Seo, Youngmin | - |
dc.contributor.googleauthor | Kim, Jieun | - |
dc.contributor.googleauthor | Hong, Jong Wook | - |
dc.contributor.googleauthor | Kamaloo, Elaheh | - |
dc.contributor.googleauthor | Carnesano, Terri A. | - |
dc.contributor.googleauthor | Choi, Jonghoon | - |
dc.relation.code | 2015003736 | - |
dc.sector.campus | S | - |
dc.sector.daehak | GRADUATE SCHOOL[S] | - |
dc.sector.department | DEPARTMENT OF BIONANOTECHNOLOGY | - |
dc.identifier.pid | jonghchoi | - |
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