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

Liang, Haifeng

doi:10.1063/1.4898786

Cited by 39 publications

(29 citation statements)

References 36 publications

(71 reference statements)

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“…This behavior of the samples is probably connected to different oxygen functional groups and defects present after different reduction methods of the rGO materials used. It was shown that a high absorption in MIR is obtained for reduced graphene oxide having aggregated oxygen atoms at the edges of defects [32]. Using different reduction methods might lead to formation of different oxygen atoms' arrangement in the carbon structure resulting in their ability to absorb MIR radiation.…”

Section: Polymer Nanocomposites Characterisationmentioning

confidence: 99%

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Mazurkiewicz-Pawlicka

Nowak

Małolepszy

et al. 2019

Nanomaterials

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Infrared (IR) shielding materials are commonly used for different applications, such as smart windows or optical filters. Infrared radiation is responsible for about 50% of the energy coming from the sun. During a hot summer or cold winter a lot of energy is needed to keep the optimal temperature inside buildings and means of transport. To reduce the heat transmission and save energy IR shielding materials can be used as coatings made of polymer composites. Graphene oxide (GO) and its reduced forms have interesting IR absorption properties and might be used as a filler in a polymer matrix for IR shielding applications. Graphene oxide can be reduced by different methods. Depending on the reduction method reduced graphene oxide (rGO) with a different content of oxygen can be obtained exhibiting different properties. In this work we propose new polymer nanocomposites with poly(vinyl alcohol) as the matrix and 0.1 wt.% addition of graphene materials with different oxygen content to be used for IR shielding applications. The results show that the properties of the graphene filler strongly influence the infrared shielding properties of the obtained nanocomposites. The best IR shielding properties were obtained for the composites where rGO with the lowest oxygen content was used.

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Section: Polymer Nanocomposites Characterisationmentioning

confidence: 99%

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Mazurkiewicz-Pawlicka

Nowak

Małolepszy

et al. 2019

Nanomaterials

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“…In 2014, Haifeng Liang has reported mid-IR photoresponse of rGO with a responsivity of 1 A/W 17 . Very recently, pristine graphene based infrared photodetectors are demonstrated with an optical modulation of up to 40 GHz, however a low responsivity (~6.1 mA/W), caused by rapid photocarrier dynamics, is compromised 18 .…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide (rGO) based wideband optical sensor and the role of Temperature, Defect States and Quantum Efficiency

Abid

Sehrawat

Islam

et al. 2018

Sci Rep

256

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We report a facile and cost-effective approach to develop self-standing reduced Graphene Oxide (rGO) film based optical sensor and its low-temperature performance analysis where midgap defect states play a key role in tuning the crucial sensor parameters. Graphite oxide (GO) is produced by modified Hummers’ method and reduced thermally at 250 °C for 1 h in Argon atmosphere to obtain rGO. Self-standing rGO film is prepared via vacuum filtration. The developed film is characterized by HRTEM, FESEM, Raman, and XRD techniques. The developed sensor exhibits highest sensitivity towards 635 nm illumination wavelength, irrespective of the operating temperature. For a given excitation wavelength, photoresponse study at low temperature (123K–303K) reveals inverse relationship between sensitivity and operating temperature. Highest sensitivity of 49.2% is obtained at 123 K for 635 nm laser at power density of 1.4 mW/mm2. Unlike sensitivity, response- and recovery-time demonstrate directly proportional dependence with operating temperature. Power dependent studies establish linear relation between power-density and sensitivity, and a safe limit beyond which sample heating prolongs the recovery time. Wavelength-dependent studies shows that proposed sensor can efficiently operate from visible to near NIR region. To the best of our knowledge such rGO based optical sensor performance at low temperature had not been reported earlier.

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“…Bolometric temperature rise of RGO can also lead to generation of photocurrent. [38,39] In order to shed light on this, we studied the effect of temperature on electrical properties of the devices and measured the temperature rise by irradiation ( Figure S7 and Table S1). No appreciable rise in temperature (< 0.1 degree) could be detected (with a resistance temperature detector, resolution of 0.1 K) for ~50 s exposure of infrared radiation (~ mW.cm -2 ).…”

Section: Methodsmentioning

confidence: 99%

Reduced graphene oxide film based highly responsive infrared detector

Khan¹,

Krupanidhi²

2017

Mater. Res. Express

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Due to the unique optical properties, graphene can effectively be used for the detection of infrared light. In this regard, reduced graphene oxide (RGO) has drawn considerable attention in scientific society because of simplicity of preparation and tunable properties. Here, we report the synthesis of RGO by solvothermal reduction of graphene oxide (GO) in ethanol and the detection of infrared light (1064 and 1550 nm) with metal-RGO-metal configuration. We have observed that photocurrent, responsivity as well as the external quantum efficiency increase with C/O ratio. The responsivity value in near-infrared region can be as high as 1.34 A.W-1 and the external quantum efficiency is more than 100%. Response times of these devices are in the order of few seconds. Overall, the responsivity of our device is found to be better than many of the already reported values where graphene or reduced graphene oxide is the only active material. The high value of quantum efficiency is due to strong light absorption and the presence of mid-gap state in RGOs.

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

Cited by 39 publications

References 36 publications

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Graphene Oxide with Controlled Content of Oxygen Groups as a Filler for Polymer Composites Used for Infrared Radiation Shielding

Reduced graphene oxide (rGO) based wideband optical sensor and the role of Temperature, Defect States and Quantum Efficiency

Reduced graphene oxide film based highly responsive infrared detector

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