Contactless In Situ Electrical Characterization Method of Printed Electronic Devices with Terahertz Spectroscopy

Zhuldybina, Mariia; Ropagnol, X.; Trudeau, Charles; Bolduc, M.; Zednik, Ricardo J.; Blanchard, F.

doi:10.3390/s19030444

Cited by 19 publications

(11 citation statements)

References 45 publications

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“…This model has been adapted for the determination of carrier lifetime and mobility in solar cell materials, , as well as the elucidation of charge injection and hopping processes in conjugated polymers . In situ studies of printed electronic devices by pump–probe THz spectroscopy have shown to produce reliable surface conductivity mapping in comparison to conventional methods such as AFM and four-point probe techniques . The absorption of the THz beam by the electrolyte and cell material is the biggest obstacle to the operando THz application in the presence of liquid electrolyte.…”

Section: Optical Spectroelectrochemistrymentioning

confidence: 99%

“…231 In situ studies of printed electronic devices by pump−probe THz spectroscopy have shown to produce reliable surface conductivity mapping in comparison to conventional methods such as AFM and four-point probe techniques. 232 The absorption of the THz beam by the electrolyte and cell material is the biggest obstacle to the operando THz application in the presence of liquid electrolyte. Currently, operando implementation of THz spectroscopy for OMIECs is practically achievable using a THz transparent electrochemical cell.…”

Section: Ir and Thz Absorptionmentioning

confidence: 99%

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Operando Characterization of Organic Mixed Ionic/Electronic Conducting Materials

Matta

Paulsen

et al. 2022

Chem. Rev.

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Operando characterization plays an important role in revealing the structure− property relationships of organic mixed ionic/electronic conductors (OMIECs), enabling the direct observation of dynamic changes during device operation and thus guiding the development of new materials. This review focuses on the application of different operando characterization techniques in the study of OMIECs, highlighting the time-dependent and bias-dependent structure, composition, and morphology information extracted from these techniques. We first illustrate the needs, requirements, and challenges of operando characterization then provide an overview of relevant experimental techniques, including spectroscopy, scattering, microbalance, microprobe, and electron microscopy. We also compare different in silico methods and discuss the interplay of these computational methods with experimental techniques. Finally, we provide an outlook on the future development of operando for OMIEC-based devices and look toward multimodal operando techniques for more comprehensive and accurate description of OMIECs.

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Section: Optical Spectroelectrochemistrymentioning

confidence: 99%

Section: Ir and Thz Absorptionmentioning

confidence: 99%

Operando Characterization of Organic Mixed Ionic/Electronic Conducting Materials

Matta

Paulsen

et al. 2022

Chem. Rev.

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“…To control the quality of conductive PE layers, Zhuldybina et al [83,114] iintroduced a simple strategy using a THz resonant structure as a quality control bar (QCB) for printing and characterized it by THz time-domain spectroscopy (THz-TDS). The main part of the THz-TDS system is a femtosecond (fs) laser, which, through an emitter, transforms the fs pulse into a picosecond THz pulse [115].…”

Section: Terahertz Time-domain Spectroscopy (Thz-tds)mentioning

confidence: 99%

Towards in-situ quality control of conductive printable electronics: a review of possible pathways

Zhuldybina¹,

Ropagnol²,

Blanchard³

2021

Flex. Print. Electron.

Self Cite

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Over the past decade, printed electronics (PE) has shown great potential for a wide range of industries, from consumer goods, electronics, aerospace, automotive, pharmaceutical, biomedical, to textiles and fashion. The rapid development of printing technology has been strongly driven by the growth of the PE market and its many applications. Here, we review the latest trends in PE production quality control, focusing on emerging technologies such as terahertz spectroscopy, which may play a key role in the development of smart manufacturing of PE devices in the near future. We also provide a comparison with conventional quality control technologies or oﬀ-line measurements, such as four-point probe measurements, atomic force microscopy, optical microscopy, etc.

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“…Over the last 20 years, terahertz (THz) technology has witnessed great advances and development, opening the window to a wide range of new applications, such as imaging, non-destructive testing, telecommunication and even biologic applications [1][2][3][4][5]. These applications require powerful THz sources with high signal-to-noise ratios.…”

Section: Introductionmentioning

confidence: 99%

Intense sub-terahertz radiation from wide-bandgap semiconductor based large-aperture photoconductive antennas pumped by UV lasers

et al. 2019

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The characteristics of terahertz (THz) radiation generated from large-aperture photoconductive antennas (LAPCAs) were investigated. The antennas were fabricated using different wide-bandgap semiconductor crystals (ZnSe, GaN, 6H-SiC, 4H-SiC and β-Ga 2 O 3 ) as the substrate. We used an amplified sub-picosecond KrF excimer laser for illumination of the LAPCAs. THz emission scaling was studied as a function of the bias field and the pump laser energy. It was found that the radiated THz energy scales quadratically as a function of the bias field and sub-linearly as a function of the optical fluence for most of the substrates. Further, we demonstrate that SiC, and especially 4H-SiC LAPCAs offer the best THz generation performances. In order to generate intense THz radiation, we fabricated both 6H-and 4H-SiC LAPCAs with an interdigitated structure. From the field autocorrelation trace, it was found that the spectra lie in the sub-THz regime, extending up to 400 GHz, with a peak frequency at 50 GHz, making the bridge between the microwaves band and the THz band. The maximum generated THz energy was 11 μJ, which is to date the highest THz energy measured from LAPCA sources, with a corresponding peak electric field of 115 kV cm −1 and a corresponding ponderomotive potential of 60 eV. Nonlinear THz experiments were performed using these energetic THz pulses, and open aperture Z-scan experiments in an n-doped InGaAs layer revealed a transmission enhancement of 1.7. It was also shown that in order to have efficient THz generation, the energy contrast of the laser must be kept high.

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Contactless In Situ Electrical Characterization Method of Printed Electronic Devices with Terahertz Spectroscopy

Cited by 19 publications

References 45 publications

Operando Characterization of Organic Mixed Ionic/Electronic Conducting Materials

Operando Characterization of Organic Mixed Ionic/Electronic Conducting Materials

Towards in-situ quality control of conductive printable electronics: a review of possible pathways

Intense sub-terahertz radiation from wide-bandgap semiconductor based large-aperture photoconductive antennas pumped by UV lasers

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