CUED Publications database

Black phosphorus ink formulation for inkjet printing of optoelectronics and photonics.

Hu, G and Albrow-Owen, T and Jin, X and Ali, A and Hu, Y and Howe, RCT and Shehzad, K and Yang, Z and Zhu, X and Woodward, RI and Wu, T-C and Jussila, H and Wu, J-B and Peng, P and Tan, P-H and Sun, Z and Kelleher, EJR and Zhang, M and Xu, Y and Hasan, T (2017) Black phosphorus ink formulation for inkjet printing of optoelectronics and photonics. Nat Commun, 8. 278-.

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Black phosphorus is a two-dimensional material of great interest, in part because of its high carrier mobility and thickness dependent direct bandgap. However, its instability under ambient conditions limits material deposition options for device fabrication. Here we show a black phosphorus ink that can be reliably inkjet printed, enabling scalable development of optoelectronic and photonic devices. Our binder-free ink suppresses coffee ring formation through induced recirculating Marangoni flow, and supports excellent consistency (< 2% variation) and spatial uniformity (< 3.4% variation), without substrate pre-treatment. Due to rapid ink drying (< 10 s at < 60 °C), printing causes minimal oxidation. Following encapsulation, the printed black phosphorus is stable against long-term (> 30 days) oxidation. We demonstrate printed black phosphorus as a passive switch for ultrafast lasers, stable against intense irradiation, and as a visible to near-infrared photodetector with high responsivities. Our work highlights the promise of this material as a functional ink platform for printed devices.Atomically thin black phosphorus shows promise for optoelectronics and photonics, yet its instability under environmental conditions and the lack of well-established large-area synthesis protocols hinder its applications. Here, the authors demonstrate a stable black phosphorus ink suitable for printed ultrafast lasers and photodetectors.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Aug 2017 01:20
Last Modified: 21 Jul 2018 20:13