LED 봉지재용 실리카 나노입자를 함유한 Phenyl-vinyl 기반의 Polysiloxane 수지의 합성 및 DBR 다공성 실리콘 기반의 VOC센서 개발
- Issued Date
- 2015
- Abstract
- chapter two. Adsorption and desorption characteristics of Distributed Bragg Reflector porous silicon (PSi) were investigated under the exposure of organic vapors. Distributed Bragg Reflector porous silicon samples were prepared by an electrochemical etch of p++-type silicon.
The etching solution consisted of a 3:1 volume mixture of aqueous 48% hydrofluoric acid and absolute ethanol. The typical etch parameters for the generation of photoluminescent Bragg-reflective porous silicon involved a periodic square wave current with 50 repeats. The surface of Distributed Bragg Reflector porous silicon was characterized by a FT-IR spectroscopy.
The shift of reflection band to the longer wavelength under the exposure of various organic vapors were observed.
- Alternative Title
- Synthesis of Silica Nanoparticle Embedded Phenyl-Vinyl-Based Polysiloxane Resins for LED Encapsulants and Development of VOCs Sensor Based on DBR Porous Silicon
- Alternative Author(s)
- Shin, Gee Roo
- Affiliation
- 조선대학교 화학과
- Department
- 일반대학원 화학과
- Advisor
- 손홍래
- Table Of Contents
- TABLE OF CONTENTS
TABLE OF CONTENTS ⅰ
LIST OF SYMBOLS AND ABBREVIATIONS ⅳ
LIST OF TABLE ⅴ
LIST OF SCHEMES ⅵ
LIST OF FIGURES ⅶ
ABSTRACT ⅸ
Chapter One. Synthesis of Silica Nanoparticle Embedded Phenyl-Vinyl-Based Polysiloxane Resins for LED Encapsulants 1
1.Introduction .............................................. 2
2.Experiment ................................................ 4
2.1. Generals .................................................. 4
2.2. Synthesis ................................................. 4
2.2.1. Preparation of Phenyl-vinyl-oligosiloxane ................. 4
2.2.1.1 Synthesis of diphenylsilanediol ........................... 4
2.2.1.2 Synthesis of Phenyl-vinyl-oligosiloxane resin ............. 5
2.2.2 SiO2 nanoparticle surface modification .................... 6
2.2.3 Fabrication of SiO2 nanoparticle surface modification embedded polysiloxane ..................................... 7
3. Results and Discussion .................................... 9
3.1. measurements .............................................. 9
3.2. Synthesis and Characterization of Phenyl- vinyl- oligosiloxane (PVO) resins................................. 9
3.3. Synthesis and Characterization of SiO2 nanoparticle surface modification .............................................. 10
3.4. Synthesis and Characterization of PVO resin using SiO2 nanoparicle surface modification .......................... 13
3.4.1. thermal curing of SiO2 nanoparticle surface modification embedded polysiloxane via hydrosilylation reaction ........................................................... 13
3.5. Optical properties of SiO2 nanoparticle surface modification embedded polysiloxane ........................ 14
3.5.1. Transmittance ............................................. 14
3.5.2. Reflective index, hardness................................. 15
4. Conclusion ................................................ 17
5. Reference ................................................. 18
6. Appendix .................................................. 19
Chapter Two. Development of VOCs Sensor Based on DBR Porous Silicon 23
1. Introduction............................................... 24
2 Experimental Section....................................... 26
2.1. Materials & Instrument..................................... 26
2.1.1. Materials.................................................. 26
2.1.2. Instrument................................................. 26
2.2. Experiment................................................. 27
2.2.1. Preparation of DBR Porous Silicon Sample................... 27
2.2.2 Optical characterization of DBR Porous Silicon............. 28
2.2.3 Detection of Naphtha vapors by DBR Porous Silicon.......... 28
3. Results and Discussion..................................... 30
3.1. Preparation result of the DBR PSi.......................... 30
3.2. Detection result of Naphtha vapors by DBR Porous Silicon... 33
4. Conclusion................................................. 36
5. Reference ................................................. 37
- Degree
- Master
- Publisher
- 조선대학교
- Citation
- 신기루. (2015). LED 봉지재용 실리카 나노입자를 함유한 Phenyl-vinyl 기반의 Polysiloxane 수지의 합성 및 DBR 다공성 실리콘 기반의 VOC센서 개발.
- Type
- Dissertation
- URI
- https://oak.chosun.ac.kr/handle/2020.oak/12382
http://chosun.dcollection.net/common/orgView/200000264574
- Appears in Collections:
- General Graduate School > 3. Theses(Master)
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LED 봉지재용 실리카 나노입자를 함유한 Phenyl-vinyl 기반의 Polysiloxane 수지의 합성 및 DBR 다공성 실리콘 기반의 VOC센서 개발.pdf
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