| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties & Applications
|
| Presentation Title |
High Volume Mechanochemical Synthesis of Black Phosphorus for Optoelectronic Applications |
| Author(s) |
Samuel Pedersen, Florent Muramutsa, Chad Husko, Joshua Wood, David Estrada, Brian J. Jaques |
| On-Site Speaker (Planned) |
Samuel Pedersen |
| Abstract Scope |
Black phosphorus integrated optoelectronic devices hold promise for enhanced device performance provided there exists a large-scale synthesis route compatible with chip fabrication. Herein, high energy planetary ball milling is demonstrated as a scalable synthesis route and the conversion kinetics of the phase transformation is investigated. During the milling process, the collisions of hardened steel media rapidly compress amorphous red phosphorus (RP) into crystalline, orthorhombic BP flakes, with a conversion yield near 90% for up to 5 g of bulk BP powder. The milling conversion kinetics, as monitored via ex situ XRD, show a sigmoidal behavior best described by the Avrami rate model. We estimate the impact energy (25 mJ/impact) and cumulative milling dose (100 kJ/g) as the optimum milling conditions for practical production scale up with minimal power consumption. Exfoliated BP flakes show photoluminescence in the near infrared indicative of few-layer BP. |
| Proceedings Inclusion? |
Planned: |