Cavity-Enhanced Absorption Spectroscopy and Photoacoustic Spectroscopy for Human Breath Analysis

Wojtas, J.; Tittel, Frank K.; Stacewicz, T.; Bielecki, Z.; Lewicki, R.; Mikołajczyk, J.; Nowakowski, M.; Szabra, D.; Stefański, Przemysław; Tarka, Jan

doi:10.1007/s10765-014-1586-4

Cited by 29 publications

(27 citation statements)

References 23 publications

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“…These FoM values compare favorably with those reported in literature 88–91. The responsivity is at least one order of magnitude higher than those of photodetectors based on solution processed 2D crystals, and InSe in particular 18.…”

Section: Resultssupporting

confidence: 85%

Liquid Phase Exfoliated Indium Selenide Based Highly Sensitive Photodetectors

Curreli

Serri

Spirito

et al. 2020

Adv Funct Materials

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Layered semiconductors of the IIIA-VIA group have attracted considerable attention in (opto)electronic applications thanks to their atomically thin structures and their thickness-dependent optical and electronic properties, which promise ultrafast response and high sensitivity. In particular, 2D indium selenide (InSe) has emerged as a promising candidate for the realization of thin-film field effect transistors and phototransistors due to its high intrinsic mobility (>10 2 cm 2 V −1 s −1 ) and the direct optical transitions in an energy range suitable for visible and near-infrared light detection. A key requirement for the exploitation of large-scale (opto)electronic applications relies on the development of low-cost and industrially relevant 2D material production processes, such as liquid phase exfoliation, combined with the availability of high-throughput device fabrication methods. Here, a β polymorph of indium selenide (β-InSe) is exfoliated in isopropanol and spray-coated InSe-based photodetectors are demonstrated, exhibiting high responsivity to visible light (maximum value of 274 A W −1 under blue excitation 455 nm) and fast response time (15 ms). The devices show a gate-dependent conduction with an n-channel transistor behavior.Overall, this study establishes that liquid phase exfoliated β-InSe is a valid candidate for printed high-performance photodetectors, which is critical for the development of industrial-scale 2D material-based optoelectronic devices.

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Section: Resultssupporting

confidence: 85%

Liquid Phase Exfoliated Indium Selenide Based Highly Sensitive Photodetectors

Curreli

Serri

Spirito

et al. 2020

Adv Funct Materials

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“…of this paper [71]. The measurement was carried out with EC−QCL laser system (Daylight Solution) tuned to 10.3587 μm absorption line.…”

Section: Ammonia (Nh 3 )mentioning

confidence: 99%

Detection of disease markers in human breath with laser absorption spectroscopy

Stacewicz

Bielecki

Wojtas

et al. 2016

Opto-Electronics Review

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“…Photoacoustic spectroscopy (PAS) is an important trace gas detection technique that is widely applied to atmospheric science, breath analysis and industrial process control (Siciliani et al, 2014;Wojtas et al, 2014;Yin et al, 2017a). In the PAS technique, modulated excitation light is selectively absorbed by a target gas and results in the generation of an acoustic wave by non-radiative energy relaxation processes.…”

Section: Introductionmentioning

confidence: 99%

Cavity-enhanced photoacoustic sensor based on a whispering-gallery-mode diode laser

Pan

et al. 2019

Atmos. Meas. Tech.

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Abstract. A cavity-enhanced photoacoustic (CEPA) sensor was developed based on an ultra-narrow linewidth whispering-gallery-mode (WGM) diode laser. A cavity-enhanced photoacoustic module (CEPAM) was designed to match the output beam from the WGM-diode laser, resulting in an increase in the excitation light power, which, in turn, significantly enhanced the photoacoustic signal amplitude. The results show that a signal gain factor of 166 was achieved, which is in excellent agreement with the power enhancement factor of 175 after considering the power transmissivity. The performance of the sensor was evaluated in terms of the detection sensitivity and linearity. A 1σ detection limit of 0.45 ppmV for C2H2 detection was obtained at atmospheric pressure with a 1 s averaging time.

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Cavity-Enhanced Absorption Spectroscopy and Photoacoustic Spectroscopy for Human Breath Analysis

Cited by 29 publications

References 23 publications

Liquid Phase Exfoliated Indium Selenide Based Highly Sensitive Photodetectors

Liquid Phase Exfoliated Indium Selenide Based Highly Sensitive Photodetectors

Detection of disease markers in human breath with laser absorption spectroscopy

Cavity-enhanced photoacoustic sensor based on a whispering-gallery-mode diode laser

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