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학술지 Synergetic Effects of Ligand Exchange and Reduction Process Enhancing both Electrical and Optical Properties of Ag Nanocrystals for Multifunctional Transparent Electrodes
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저자
강민수, 조형목, 김한은, 윤혜원, 김동규, 우호균, 이우석, 홍성훈, 오승주
발행일
201810
출처
Nanoscale, v.10 no.38, pp.18415-18422
ISSN
2040-3364
출판사
Royal Society of Chemistry (RSC)
DOI
https://dx.doi.org/10.1039/c8nr05212c
협약과제
18JB1500, 파동에너지 제어 ICT 극한물성시스템 융합기술, 홍성훈
초록
In this work, we introduce a low cost, room-temperature and atmospheric pressure based chemical method to produce highly transparent, conductive, and flexible nano-mesh structured electrodes using Ag nanocrystals (NCs). Sequential treatments of ligand exchange and reduction processes were developed to engineer the optoelectronic properties of Ag NC thin films. Combinatorial analysis indicates that the origin of the relatively low conductivity comes from the non-metallic compounds that are introduced during ligand exchange. The reduction process successfully removed these non-metallic compounds, yielding structurally uniform, optically more transparent, dispersive, and electrically more conductive thin films. We optimized the design of Ag NC thin film mesh structures, and achieved low sheet resistance (9.12 廓 ?뼞?닋1), high optical transmittance (94.7%), and the highest figure of merit (FOM) of 6.37 × 10?닋2. Solution processed flexible transparent heaters, touch pads, and wearable sensors are demonstrated, emphasizing the potential applications of Ag NC transparent electrodes in multifunctional sensors and devices.
KSP 제안 키워드
Ag nanocrystals, Chemical method, Combinatorial analysis, Conductive thin films, Electrical and optical properties, Figure of merit, Flexible transparent heaters, Low-cost, Metallic compounds, Nano-mesh, Optical transmittance