고성능 공핍모드 n형 유기전기화학트랜지스터
- 주제(키워드) Organic electrochemical transistors , Side-chain free polymer , Organic mixed ionic-electronic conductor , Heterojunction structure
- 발행기관 아주대학교 일반대학원
- 지도교수 박성준
- 발행년도 2024
- 학위수여년월 2024. 2
- 학위명 석사
- 학과 및 전공 일반대학원 지능형반도체공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000033714
- 본문언어 한국어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Organic electrochemical transistors (OECTs) have gained tremendous attention due to their low-voltage operation, high amplification, and ion-to-electron coupling. These advancements are particularly notable in the development of biocompatible and flexible sensors, as well as e-skin multifunctional circuits. Despite these advancements, the practical application of OECTs, where n-type and p-type materials complement each other, is challenging. This is largely due to the performance disparity between p-type and n-type organic mixed ionic-electronic conductors (OMIECs) used in OECT channels, with n-type OMIECs facing issues, such as low electron mobility, slow operation speed, and instability. To address these challenges, this study focuses on exploring the operational characteristics of n-type OECTs using newly synthesized X-material. The research demonstrates that OECTs utilizing X-material exhibit impressive performance metrics, including high charge carrier mobility, rapid transient response, and enhanced long-term stability. All results indicate that X-material can effectively complement p-type counterparts. Furthermore, the study introduces an innovative concept in the form of an anti-ambipolar electrochemical transistor. This transistor operates through ion injection-driven resistance modulation, presenting a novel approach to transistor design. Overall, this research significantly contributes to enhancing the performance of next-generation organic electronic devices, potentially revolutionizing the field.
more목차
1. Background 1
1.1 The emergence of organic electrochemical transistors 1
1.2 OECTs working mechanisms 1
1.3 Performance metrics of OECTs 1
1.4 Heterojunction structure in organic transistors 2
2. Introduction 4
2.1 Challenge of OECTs 4
2.2 The rise of ladder type polymer 4
2.3 X-material excellent candidate as n-type OMIEC 6
3. Results and discussion 7
3.1 UV-Vis spectroelectrochemistry 7
3.2 Ion mobility extraction 7
3.3 Steady state response characteristics 8
3.4 Electrochemical impedance spectroscopy 9
3.5 Transient response and long-term stability 10
3.6 Anti-ambipolar organic electrochemical transistors 11
4. Conclusion 13
5. Experimental section 14
5.1 Materials 14
5.2 Electrochemical measurements 14
5.3 OECT fabrication 14
5.4 Moving front experiment 15
5.5 Characterization 15
6. References 33
