Conducting‐Polymer Bolometers for Low‐Cost IR‐Detection Systems

Håkansson, Anna; Shahi, Maryam; Brill, J. W.; Fabiano, Simone; Crispin, Xavier

doi:10.1002/aelm.201800975

Cited by 17 publications

(25 citation statements)

References 41 publications

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“…14 A variety of bolometer sensors have been employed for a wide range of applications, such as in night vision systems in automobiles, astronomy, and energy leakage detection tools. 15 To reveal the sensing properties of the bio-nanocomposite tissue, the current−voltage characteristics and the temperature dependence of the material were determined. Moreover, the photoresponse at different light intensities and excitation wavelengths in the NIR wavelength range was evaluated.…”

Section: ■ Introductionmentioning

confidence: 99%

Application of a Bio-Nanocomposite Tissue as an NIR Optical Receiver and a Temperature Sensor

Landi

Neitzert

2021

ACS Appl. Electron. Mater.

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The application of a type of bio-nano tissue, consisting of tobacco cells and multiwalled carbon nanotubes, as a sensitive near-infrared region (NIR) bolometer operating at room temperature was investigated. An electrical resistor-type sensor was fabricated by the evaporation of lateral gold contacts. A very low dark conductivity was achieved by a high-voltage treatment of a strongly conducting nanotube network. Although before the treatment the electrical transport was dominated by the percolative transport in the nanotube network, after the voltage stress the electronic transport in the low-conductivity tissue was controlled only by the intrinsic electrical properties of the biological matrix. In this latter case, the conductivity was extremely temperature and humidity dependent. However, on operating the sensor tissue in a small temperature window around room temperature, the change in humidity could be neglected. Under these conditions, the multifunctional device functioned as a very high sensitivity temperature sensor with a temperature coefficient of resistance of more than −20%/K. Sensitive bolometer operation with a very good signal-to-noise ratio was demonstrated by irradiation of the tissue with low-power LEDs in the near-infrared range between 780 and 1720 nm.

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Section: ■ Introductionmentioning

confidence: 99%

Application of a Bio-Nanocomposite Tissue as an NIR Optical Receiver and a Temperature Sensor

Landi

Neitzert

2021

ACS Appl. Electron. Mater.

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“…In relation to the electrical characteristics described above, several materials have been studied for their application as thermosensing films, including carbon nanotubes and other organic compounds with TCR values of about 2.1%-3.1%/K [1][2][3], poly-SiGe (0.68%-2%/K) [4], Y-Ba-Cu-O (~3.3%/K) [5],…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Microbolometer Arrays Based on Polymorphous Silicon–Germanium

Jiménez

Moreno

Torres

et al. 2020

Sensors

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This work reports the development of arrays of infrared sensors (microbolometers) using a hydrogenated polymorphous silicon–germanium alloy (pm-SixGe1-x:H). Basically, polymorphous semiconductors consist of an amorphous semiconductor matrix with embedded nanocrystals of about 2–3 nm. The pm-SixGe1-x:H alloy studied has a high temperature coefficient of resistance (TCR) of 4.08%/K and conductivity of 1.5 × 10−5 S∙cm−1. Deposition of thermosensing film was made by plasma-enhanced chemical vapor deposition (PECVD) at 200 °C, while the area of the devices is 50 × 50 μm2 with a fill factor of 81%. Finally, an array of 19 × 20 microbolometers was packaged for electrical characterization. Voltage responsivity values were obtained in the range of 4 × 104 V/W and detectivity around 2 × 107 cm∙Hz1/2/W with a polarization current of 70 μA at a chopper frequency of 30 Hz. A minimum value of 2 × 10−10 W/Hz1/2 noise equivalent power was obtained at room temperature. In addition, it was found that all the tested devices responded to incident infrared radiation, proving that the structure and mechanical stability are excellent.

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“…Here, the near infrared (NIR) radiation from a halogen lamp, not absorbed by the TMs, was used to generate an overpotential by the SiSC to then drive the BPVC. [27] In its oxidized state, PEDOT features low absorption in the VIS but gradually increasing absorbance values are available in the IR (Figure 1a) that even extend beyond λ = 3000 nm, thanks to the presence of charge carriers and energetics that allow for low energy transitions. Further, SiSCs loose nearly another 50% due to thermalization effects and extraction of charges.…”

Section: Introductionmentioning

confidence: 99%

“…Heat‐absorbing, highly conducting polymer systems, such as poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), are interesting candidates for solar IR harvesting . In its oxidized state, PEDOT features low absorption in the VIS but gradually increasing absorbance values are available in the IR ( Figure a) that even extend beyond λ = 3000 nm, thanks to the presence of charge carriers and energetics that allow for low energy transitions .…”

Section: Introductionmentioning

confidence: 99%

“…[26] Heat-absorbing, highly conducting polymer systems, such as poly (3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), are interesting candidates for solar IR harvesting. [27] In its oxidized state, PEDOT features low absorption in the VIS but gradually increasing absorbance values are available in the IR (Figure 1a) that even extend beyond λ = 3000 nm, thanks to the presence of charge carriers and energetics that allow for low energy transitions. [28,29] In addition, PEDOT:PSS can be processed from solution, facilitating preparation of electrode films of various thicknesses, and providing a means to control surface resistance and confine the IR absorption to specific values matching the application.…”

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confidence: 99%

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Solar Heat‐Enhanced Energy Conversion in Devices Based on Photosynthetic Membranes and PEDOT:PSS‐Nanocellulose Electrodes

Méhes

Vagin

Mulla

et al. 2019

Advanced Sustainable Systems

Self Cite

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convert solar energy into electricity by leveraging the complex process of photosynthesis, useful both as energy generators and sensors for various physical inputs. [1][2][3][4][5][6][7][8][9] With accelerating climate change and growing demand for energy, such bio-based methods have been identified as a promising route toward "green" energy. [10] Thylakoid membranes (TMs), the compartments inside chloroplasts, algae, and cyanobacteria in which the light-dependent reactions of the photosynthetic energy conversion are initiated, constitute an interesting model system for biohybrid light-harvesting. Indeed, broad-spectrum light absorption, efficient water splitting, a near-unity light-to-charge conversion efficiency, optimized excitation energy and electron transport, photo damage protection, and self-organization and selfrepair, all being properties of TMs, are strongly desired attributes of future intelligent solar energy harvesting technology. However, integration of TMs and isolated photoprotein complexes with technology poses several challenges, including complex preparation, poor stability, and limited photocurrents. [11][12][13] To address these challenges, promising and novel biohybrid devices and electrodes have been demonstrated by wiring/coupling TMs to electrodes via oligoelectrolytes, [14] carbon nanotubes, [15] conducting polymers, [16] Energy harvesting from photosynthetic membranes, proteins, or bacteria through bio-photovoltaic or bio-electrochemical approaches has been proposed as a new route to clean energy. A major shortcoming of these and solar cell technologies is the underutilization of solar irradiation wavelengths in the IR region, especially those in the far IR region. Here, a biohybrid energyharvesting device is demonstrated that exploits IR radiation, via convection and thermoelectric effects, to improve the resulting energy conversion performance. A composite of nanocellulose and the conducting polymer system poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is used as the anode in biohybrid cells that includes thylakoid membranes (TMs) and redox mediators (RMs) in solution. By irradiating the conducting polymer electrode by an IR light-emitting diode, a sixfold enhancement in the harvested bio-photovoltaic power is achieved, without compromising stability of operation.Investigation of the output currents reveals that IR irradiation generates convective heat transfer in the electrolyte bulk, which enhances the redox reactions of RMs at the anode by suppressing diffusion limitations. In addition, a fast-transient thermoelectric component, originating from the PEDOT:PSSnanocellulose-electrolyte interphase, further increases the bio-photocurrent. These results pave the way for the development of energy-harvesting biohybrids that make use of heat, via IR absorption, to enhance energy conversion efficiency.

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Conducting‐Polymer Bolometers for Low‐Cost IR‐Detection Systems

Cited by 17 publications

References 41 publications

Application of a Bio-Nanocomposite Tissue as an NIR Optical Receiver and a Temperature Sensor

Application of a Bio-Nanocomposite Tissue as an NIR Optical Receiver and a Temperature Sensor

Fabrication of Microbolometer Arrays Based on Polymorphous Silicon–Germanium

Solar Heat‐Enhanced Energy Conversion in Devices Based on Photosynthetic Membranes and PEDOT:PSS‐Nanocellulose Electrodes

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