A plastic-based bolometer array sensor using carbon nanotubes for low-cost infrared imaging devices

Narita, Kôichi; Kuribayashi, R.; Altintas, Ersin; Someya, Hiroko; Tsuda, Katsutoshi; Ohashi, Keisuke; Tabuchi, Toru; Okubo, Shuichi; Imazato, Masaharu; Komatsubara, Shigeyuki

doi:10.1016/j.sna.2013.03.008

Cited by 21 publications

(13 citation statements)

References 18 publications

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“…The effect of PSS load in thin PEDOT:PSS films on R RT , dR dT −1 , and TCR is presented in Figure . For (pristine) 1:2.5 PEDOT:PSS, without any further optimization, a TCR of around −2% K −1 was found, this value being consistent with previous studies, and comparable or even higher than those of other organic as well as inorganic bolometer sensing materials . The negative sign means the resistance decreases with increasing temperature.…”

Section: Resultssupporting

confidence: 89%

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

Håkansson

Shahi

Brill

et al. 2019

Adv Elect Materials

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Semiconducting polymers are promising materials for manufacturing optoelectronic devices, such as large‐area solar cells or small light‐emitting diodes, through the use of printing technologies. In their oxidized form, π‐conjugated polymers become good electrical conductors and their optical absorption shifts to the infrared region. It is demonstrated that conducting polymers can be integrated in bolometers for IR detection. A bolometer is a thermally isolated thin device that absorbs IR radiation and translates a temperature change into a change in electrical resistance. While commercial bolometers are usually made of complex architectures comprising several materials (that is, an IR absorbing layer, a conducting layer, and a thermally insulating layer), the first polymer bolometer is demonstrated with a freestanding layer of poly(3,4‐ethylene‐dioxythiophene) having high IR absorption, low thermal conductivity, and good thermistor action in one single layer. The solution processability of conducting polymers, their compatibility with high‐resolution printing technologies, and their unique combination of optoelectronic properties can lead to a breakthrough for low‐cost uncooled IR cameras, which are in high demand for security and safety applications.

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Section: Resultssupporting

confidence: 89%

“…One way could be to study alternative, low‐cost sensing materials. Candidates are likely to be found within the group of organic electronic materials and materials such as carbon nanotubes and proteins have already been successfully used as sensing material in bolometers giving promises to organic bolometers …”

Section: Introductionmentioning

confidence: 99%

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

Håkansson

Shahi

Brill

et al. 2019

Adv Elect Materials

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“…An average absorbance of 15% in the range from 3 to 25 µm was confirmed by taking the difference in the average transmittance between the samples with and without RGO films (Figure 3(c)). Moreover, an average TCR of −3% was obtained, 24 which is higher than that of carbon nanotubes 27 and slightly higher than that of vanadium oxide thin films. 28 The minus sign of the TCR agrees with the semiconductor properties of the RGO films.…”

mentioning

confidence: 84%

Mid-infrared response of reduced graphene oxide and its high-temperature coefficient of resistance

Liang

2014

AIP Advances

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Much effort has been made to study the formation mechanisms of photocurrents in graphene and reduced graphene oxide films under visible and near-infrared light irradiation. A built-in field and photo-thermal electrons have been applied to explain the experiments. However, much less attention has been paid to clarifying the mid-infrared response of reduced graphene oxide films at room temperature. Thus, mid-infrared photoresponse and annealing temperature-dependent resistance experiments were carried out on reduced graphene oxide films. A maximum photocurrent of 75 μA was observed at room temperature, which was dominated by the bolometer effect, where the resistance of the films decreased as the temperature increased after they had absorbed light. The electrons localized in the defect states and the residual oxygen groups were thermally excited into the conduction band, forming a photocurrent. In addition, a temperature increase of 2 °C for the films after light irradiation for 2 minutes was observed using absorption power calculations. This work details a way to use reduced graphene oxide films that contain appropriate defects and residual oxygen groups as bolometer-sensitive materials in the mid-infrared range.

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“…CNT-based IR detector has been highlighted in many researches for decades, because it shows good electrical responses from both an induced mechanical stress and a temperature change [1], [2]. In addition, CNTs exhibit remarkable mechanical properties, whose tensile strength is greater than that of any other known materials [3], [4].…”

Section: Introductionmentioning

confidence: 99%

An infrared detector based on SWNT film suspended on double cantilever

Han

Jung

Kong

2014

IEEE SENSORS 2014 Proceedings

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An infrared detector based on single wall nanotube (SWNT) film suspended on double-cantilever is proposed and fabricated. The operation principle of the proposed infrared detector is a simultaneous measurement of electrical resistance change induced by thermal radiation on the SWNT film and mechanical stress induced from bimetal-type double-cantilever. Measured temperature coefficient of resistance (TCR) of an proposed bolometer was -1.82 %/K in the temperature range of 20~80 celsius temperature degree. The responsivity (R v ) of the proposed bolometer was 310,000 V/W at bias currents of 500 μA and detectivity was 2.62×10 8 cm 1/2 W -1 . By adding mechanicalstress induced IR measurement function using double cantilever on SWNT-based bolometer, a superior performance has been achieved.Keywords-infrared detector, cantilever, single wall nanotube I.

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A plastic-based bolometer array sensor using carbon nanotubes for low-cost infrared imaging devices

Cited by 21 publications

References 18 publications

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

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

Mid-infrared response of reduced graphene oxide and its high-temperature coefficient of resistance

An infrared detector based on SWNT film suspended on double cantilever

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