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Title: Silicon-Phosphorene Nanocavity-Enhanced Optical Emission at Telecommunications Wavelengths

Journal Article · · Nano Letters
ORCiD logo [1]; ORCiD logo [2];  [3];  [2];  [3]; ORCiD logo [1];  [1];  [4];  [5]; ORCiD logo [2];  [6]; ORCiD logo [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
  3. Centre National de la Recherche Scientifique (CNRS), Paris (France). Centre de Nanosciences et de Nanotechnologies
  4. Thales Research and Technology, Palaiseau (France)
  5. Thales Research and Technology, Palaiseau (France)
  6. Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, Bât. 220, 91405 Orsay cedex, France

Generating and amplifying light in silicon (Si) continues to attract significant attention due to the possibility of integrating optical and electronic components in a single material platform. Unfortunately, silicon is an indirect band gap material and therefore an inefficient emitter of light. With the rise of integrated photonics, the search for silicon-based light sources has evolved from a scientific quest to a major technological bottleneck for scalable, CMOS-compatible, light sources. Recently, emerging two-dimensional materials have opened the prospect of tailoring material properties based on atomic layers. Few-layer phosphorene, which is isolated through exfoliation from black phosphorus (BP), is a great candidate to partner with silicon due to its layer-tunable direct band gap in the near-infrared where silicon is transparent. Here we demonstrate a hybrid silicon optical emitter composed of few-layer phosphorene nanomaterial flakes coupled to silicon photonic crystal resonators. We show single-mode emission in the telecommunications band of 1.55 μm ($$E_g$$ = 0.8 eV) under continuous wave optical excitation at room temperature. The solution-processed few-layer BP flakes enable tunable emission across a broad range of wavelengths and the simultaneous creation of multiple devices. Our work highlights the versatility of the Si-BP material platform for creating optically active devices in integrated silicon chips.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1487134
Journal Information:
Nano Letters, Vol. 18, Issue 10; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (1)

2D–Organic Hybrid Heterostructures for Optoelectronic Applications journal February 2019

Figures / Tables (4)


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