| AVS 66th International Symposium & Exhibition | |
| 2D Materials | Tuesday Sessions |
| Session 2D-TuP |
| Session: | 2D Poster Session |
| Presenter: | Jaeyoon Baik, Pohang Accelerator Laboratory, Republic of Korea |
| Authors: | D. Kim, Pohang Accelerator Laboratory, Republic of Korea H. Choi, Pohang Accelerator Laboratory, Republic of Korea J. Baik, Pohang Accelerator Laboratory, Republic of Korea |
| Correspondent: | Click to Email |
We investigated oxygen reduction of black phosphorus(BP) using scanning photoemission electron spectroscopy. In spite of many effort of realizing ultra-thin film transistor of 2-dimensional atomic material of BP, inherent limitation in the transfer method such as oxidation, has not allowed application in real devices. Therefore, it is necessary to study the development of methods to prevent oxidation or reduction through the post-processing. However, such studies are very important to observe chemical composition changes using XPS, but there are other limitations in investigating based on flakes of the BP in um-size using general XPS . In this work, we observed Au atom, which deposited on BP, could play a role of catalyst reducing the oxidation on the top layers of BP. Using SPEM analysis method with 200nm spatial resolution, we verified the reduction mechanism of the um-size flake BP. As a result, we could observe that oxygen in the BP oxide disappeared through the Au atoms. Therefore, this can be applied to BP's Oxide Removal and Thickness Control technology and is expected to provide useful information for future application of the element.
References
[1] Zehua Hu et al.‚ Nanoscale (2018) 10, 21575 ; doi:10.1039/c8nr07395c.
[2] Hao Huang et al.‚ npj 2D Materials and Applications (2017) 1:20 ; doi:10.1038/s41699-017-0022-6.