Silver Nanowires on Surface-Functionalized Chitosan Biopolymers for Stretchable Transparent Conducting Films
- Alternative Title
- Silver Nanowires on Surface-Functionalized Chitosan Biopolymers for Stretchable Transparent Conducting Films + 표면 개질된 키토산 바이오 고분자에 코팅된 은 나노 와이어 기반 신축 투명 전도성 필름
- Abstract
- We develop highly stretchable, biocompatible, conductive transparent electrodes based on silver nanowires (AgNWs) deposited on functionalized chitosan biopolymer substrates. 11-Aminoundecanoic acid is introduced as a surface modifier for enhancing the chemical bond between AgNWs and highly hydrophobic chitosan substrates. The sheet resistance of chemically treated AgNW/chitosan thin-films is two orders of magnitude lower than that of untreated films. The surface modification simultaneously enahnces electrical, optical, and mechanical properties of AgNWs owing to the strong chemical bond formed between the metal wires and the chitosan films. The chemically-functionalized AgNWs on the chitosan substrates acheive a low sheet resistance of 12.2 ohm/sq with a high transmittance of 88.9 %. In addition, extremely thin, stretchable alternating current-driven electroluminescent devices and stretchable transparent heaters have been successfully fabricated based on surface-modified AgNW/chitosan thin-films. The stretchable devices can be cut, stretched, bent, and twisted without performance degradation, showing outstanding elastic behaviors. With this approach, stretchable displays and transparent heaters prepared on bio-compatible substrates can be easily applied to curved surfaces or human skins. We believe that the stretchable AgNW/chitosan thin-films optimized by the surface modification strategy hold a great promise for high performance wearable electronics.
- Issued Date
- 2019
- Awarded Date
- 2019. 2
- Type
- Dissertation
- Keyword
- Transparent electrode Chitosan Silver Nanowires Stretchable electronic Wearable electronics.
- Publisher
- 부경대학교
- Affiliation
- 부경대학교 대학원
- Department
- 대학원 융합디스플레이공학과
- Advisor
- Yong Hyun Kim
- Table Of Contents
- Contents i
List of Figures iv
List of Tables viii
Acknowledgements ix
Abstract xii
요약 xiv
Chapter I INTRODUCTION 1
Chapter 2 THEORITICAL BASIS 4
2.1. Optoelectronic Devices 4
2.2. Alternating Current Electroluminescent (ACEL) 5
2.2.1. Mechanism of Light Emission of ACEL 7
2.3. Transfer Heat by Phonons and Electrons 12
2.4. Transparent Conductor Electrode 16
2.4.1. Metal Oxide 16
2.4.2. Metal Nanowires 17
2.4.3. Conductive Polymer 19
2.4.4. Graphene 23
Chapter 3 EXPERIMENTAL PROCEDURES 28
3.1. Chitosan Transparent Electrode Preparation 28
3.1.1. Chitosan Thin Film 28
3.1.2. Deposition AgNWs on Chitosan 29
3.2. Devices Fabrication 30
3.2.1. Alternative Current Electroluminescent Device 30
3.2.2. Stretchable Transparent Heaters 31
3.3. Measurements 32
Chapter 4 RESULT AND DISCUSSION 33
4.1. Effect of Organic Surface Modifier on Chitosan 33
4.2. Electrical and Optical Properties of Transparent Electrode 39
4.3. Stability and Stretchability of Transparent Electrode 43
4.3.1. Mechanical Stability 43
4.3.2. Chemical and Air Exposure 44
4.3.3. Adhesive Tape 45
4.4. Performance of Transparent Electrode 47
4.4.1. Stretchable Alternative Current Electroluminescent (ACEL) 47
4.4.2. Stretchable Transparent Heaters 51
Chapter 5 CONCLUSION 54
Chapter 6 REFERENCES 55
- Degree
- Master
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- 대학원 > 융합디스플레이공학과
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