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학술지 Bimodal Phase Separated Block Copolymer/ Homopolymer Blends Self-Assembly for Hierarchical Porous Metal Nanomesh Electrodes
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저자
김주영, 진형민, 정성준, 장태용, 김봉훈, 차승근, 김준수, 신동옥, 최진영, 김장환, 양건국, 전수완, 이영기, 김광만, 신종화, 김상욱
발행일
201801
출처
Nanoscale, v.10 no.1, pp.100-108
ISSN
2040-3364
출판사
Royal Society of Chemistry (RSC)
DOI
https://dx.doi.org/10.1039/c7nr07178g
협약과제
16PB6300, 덴드라이트 억제를 위한 이온분포제어형 전해질 및 미세패턴 전극기술 기반 리튬금속 이차전지 기술 개발, 이영기
초록
Transparent conducting electrodes (TCEs) are essential components in various optoelectronic devices. Nanostructured metallic thin film is one of the promising candidates to complement current metal oxide films, such as ITO, where high cost rare earth elements have been a longstanding issue. Herein, we present that multiscale porous metal nanomesh thin films prepared by bimodal self-assembly of block copolymer (BCP)/homopolymer blends may offer a new opportunity for TCE. This hierarchical concurrent self-assembly consists of macrophase separation between BCP and homopolymer as well as microphase separation of BCP, and thus provides a straightforward spontaneous production of a highly porous multiscale pattern over an arbitrary large area. Employing a conventional pattern transfer process, we successfully demonstrated a multiscale highly porous metallic thin film with reasonable optical transparency, electro-conductance, and large-area uniformity, taking advantage of low loss light penetration through microscale pores and significant suppression of light reflection at the nanoporous structures. This well-defined controllable bimodal self-assembly can offer valuable opportunities for many different applications, including optoelectronics, energy harvesting, and membranes.
KSP 제안 키워드
Energy Harvesting(EH), Hierarchical porous, Highly porous, Homopolymer blends, Light penetration, Macrophase separation, Metal oxide films, Metal-oxide(MOX), Metallic thin film, Multiscale porous, Optical transparency