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Proceedings Paper

Towards a low-cost on-chip mid-IR gas sensing solution: chemical synthesis of lead-salt photonic materials
Author(s): Tahere Hemati; Xintong Zhang; Binbin Weng
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Paper Abstract

Mid-infrared (mid-IR) gas sensing technology has been widely received as a competitive choice for the newly emerging internet-of-things (IoTs) applications mainly due to its high sensitivity, selectivity and reliability. However, high cost and chip-integration challenges, on the contrary, still limits their potential development. Lead-salt materials are proposed to offer possible solutions to address these issues, and our previous works have demonstrated their outstanding photon generation and detection capabilities in the MIR region. In this work, towards the low-cost point, we demonstrate some preliminary experimental results for preparing lead-salt based high quality active MIR photonic materials. Using a modified oriented-attachment synthesis method, for the first time, PbSe films grown on amorphous glass substrates in the wet chemical process, presented a highly smooth surface having an uniformed crystal orientation in (111) direction. Further, their nanocrystal size can also be tailored to allow a broad range control of emission wavelength from 3.3 μm to 4.2 μm owing to the unique quantum size effects. In conclusion, this new material growth exploration opens a possible cost-effective path to conduct active photonic waveguide engineering to manipulate light-and-matter interactions in the MIR range for potential chip-integrated sensing applications (e.g., IoTs).

Paper Details

Date Published: 26 February 2020
PDF: 7 pages
Proc. SPIE 11284, Smart Photonic and Optoelectronic Integrated Circuits XXII, 1128418 (26 February 2020); doi: 10.1117/12.2548529
Show Author Affiliations
Tahere Hemati, The Univ. of Oklahoma (United States)
Xintong Zhang, Northeast Normal Univ. (China)
Binbin Weng, The Univ. of Oklahoma (United States)

Published in SPIE Proceedings Vol. 11284:
Smart Photonic and Optoelectronic Integrated Circuits XXII
Sailing He; Laurent Vivien, Editor(s)

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