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Room Temperature Wafer-Scale Synthesis of Highly Transparent, Conductive CuS Nanosheet Films via a Simple Sulfur Adsorption-Corrosion Method

Room Temperature Wafer-Scale Synthesis of Highly Transparent, Conductive CuS Nanosheet Films via a Simple Sulfur Adsorption-Corrosion Method
Hong, JohnKim, Byung-SungHou, BoPak, SangyeonKim, TaehunJang, A-RangCho, YuljaeLee, SanghyoAn, Geon-HyoungJang, Jae EunMorris, Stephen M.Sohn, Jung InnCha, SeungNam
DGIST Authors
Hong, John; Kim, Byung-Sung; Hou, Bo; Pak, Sangyeon; Kim, Taehun; Jang, A-Rang; Cho, Yuljae; Lee, Sanghyo; An, Geon-Hyoung; Jang, Jae Eun; Morris, Stephen M.; Sohn, Jung Inn; Cha, SeungNam
Issue Date
ACS Applied Materials and Interfaces, 13(3), 4244-4252
Author Keywords
transparent conductive electrodestransition metal sulfidevapor corrosionscalable fabricationflexible electronicsadsorption isotherm
Electronic applicationMechanical durabilityMetal oxide materialsRoom temperature synthesisTransparent conductive electrodesSulfur compoundsAtmospheric corrosionAtmospheric temperatureCopper compoundsCopper corrosionMetalsNanosheetsOxide filmsSubstratesSulfide mineralsSulfurTransparencyTransparent electrodesConductive electrodesCorrosion phenomenaDevice fabrications
The development of highly conductive electrodes with robust mechanical durability and clear transmittance in the visible to IR spectral range is of great importance for future wearable/flexible electronic applications. In particular, low resistivity, robust flexibility, and wide spectral transparency have a significant impact on optoelectronic performance. Herein, we introduce a new class of covellite copper monosulfide (CuS) nanosheet films as a promising candidate for soft transparent conductive electrodes (TCEs). An atmospheric sulfur adsorption-corrosion phenomenon represents a key approach in our work for the achievement of wafer-scale CuS nanosheet films through systematic control of the neat Cu layer thickness ranging from 2 to 10 nm multilayers at room temperature. These nanosheet films provide outstanding conductivity (∼25 ω sq-1) and high transparency (> 80%) in the visible to infrared region as well as distinct flexibility and long stability under air exposure, yielding a high figure-of-merit (∼60) that is comparable to that of conventional rigid metal oxide material-based TCEs. Our unique room temperature synthesis process delivers high quality CuS nanosheets on any arbitrary substrates in a short time (< 1 min) scale, thus guaranteeing the widespread use of highly producible and scalable device fabrication. © 2021 American Chemical Society.
American Chemical Society
Related Researcher
  • Author Jang, Jae Eun Advanced Electronic Devices Research Group(AEDRG) - Jang Lab.
  • Research Interests Nanoelectroinc device; 생체 신호 센싱 시스템 및 생체 모방 디바이스; 나노 통신 디바이스
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Department of Electrical Engineering and Computer ScienceAdvanced Electronic Devices Research Group(AEDRG) - Jang Lab.1. Journal Articles

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