Phosphorene: Enhanced Photoresponse from Phosphorene-Phosphorene-Suboxide Junction Fashioned by Focused Laser Micromachining (Adv. Mater. 21/2016)

Junpeng Lu; Alexandra Carvalho; Jing Wu; Hongwei Liu; Eng Soon Tok; Antonio H Castro Neto; Barbaros Özyilmaz; Chorng Haur Sow

doi:10.1002/adma.201670146

Phosphorene: Enhanced Photoresponse from Phosphorene-Phosphorene-Suboxide Junction Fashioned by Focused Laser Micromachining (Adv. Mater. 21/2016)

Adv Mater. 2016 Jun;28(21):4164. doi: 10.1002/adma.201670146.

Authors

Junpeng Lu^{1

2}, Alexandra Carvalho², Jing Wu¹, Hongwei Liu³, Eng Soon Tok¹, Antonio H Castro Neto^{1

2}, Barbaros Özyilmaz^{1

2}, Chorng Haur Sow^{1

2}

Affiliations

¹ Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542, Singapore.
² Center For Advanced 2D Materials and Graphene Research Center, National University of Singapore, 6 Science Drive 2, Singapore, 117546, Singapore.
³ Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way. Innovis, #08-03, Singapore, 138634, Singapore.

PMID: 27246921
DOI: 10.1002/adma.201670146

Abstract

On page 4090, B. Özyilmaz, C. H. Sow, and co-workers use a focused laser beam to modify the surface of a phosphorene device. With a simple focused laser beam, a part of the phosphorene can be scanned and converted into phosphorene-suboxide species, leaving behind a functional and active phosphorene-phosphorene suboxide junction in the device. Once the junction is formed, the photoresponsivity and photocurrent distribution of the device can be significantly altered with a qualitative difference in behavior. Photovoltaic-like behavior is observed, which is not found in the pristine sample.

Keywords: 2D materials; lasers; optoelectronic; phosphorene; phosphorene oxide.