Photonic crystallization of two-dimensional MoS2 for stretchable photodetectors
| Autor: | Lawrence F. Drummy, Richard Hahnkee Kim, Rachel Rai, Michael F. Durstock, Nicholas R. Glavin, Rahul Rao, Christopher Muratore, Juyoung Leem, SungWoo Nam, Andrey A. Voevodin, Michael E. McConney, Ali Jawaid |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fabrication Polydimethylsiloxane business.industry Photodetector 02 engineering and technology Substrate (electronics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Flexible electronics 0104 chemical sciences Amorphous solid law.invention chemistry.chemical_compound Responsivity chemistry law Optoelectronics General Materials Science Crystallization 0210 nano-technology business |
| Zdroj: | Nanoscale. 11:13260-13268 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/c9nr02173f |
| Popis: | Low temperature synthesis of high quality two-dimensional (2D) materials directly on flexible substrates remains a fundamental limitation towards scalable realization of robust flexible electronics possessing the unique physical properties of atomically thin structures. Herein, we describe room temperature sputtering of uniform, stoichiometric amorphous MoS2 and subsequent large area (>6.25 cm2) photonic crystallization of 5 nm 2H-MoS2 films in air to enable direct, scalable fabrication of ultrathin 2D photodetectors on stretchable polydimethylsiloxane (PDMS) substrates. The lateral photodetector devices demonstrate an average responsivity of 2.52 μW A−1 and a minimum response time of 120 ms under 515.6 nm illumination. Additionally, the surface wrinkled, or buckled, PDMS substrate with conformal MoS2 retained the photoconductive behavior at tensile strains as high as 5.72% and over 1000 stretching cycles. The results indicate that the photonic crystallization method provides a significant advancement in incorporating high quality semiconducting 2D materials applied directly on polymer substrates for wearable and flexible electronic systems. |
| Databáze: | OpenAIRE |
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