Thermally reduced solution-processed graphene oxide thin film: An efficient infrared photodetector

Chowdhury, Farzana A.; Mochida, Tomoaki; Otsuki, Joe; Alam, Mahbub

doi:10.1016/j.cplett.2014.01.012

Cited by 25 publications

(20 citation statements)

References 48 publications

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“…It has a great potential in optoelectronic applications because of its solution‐processable and tunable optoelectronic properties. Reduced GO (rGO) has also been applied for developing photodetectors, while showing poor photoresponsivity and slow response to photoswitching . Herein, we report a solution‐processing technique to fabricate high‐performance phototransistors with a hybrid channel material of nitrogen‐doped graphene quantum dots (NGQDs)‐modified perovskite and mildly reduced GO (mrGO).…”

Section: Performance Comparison Between the Ngqds–perovskite/mrgo Phomentioning

confidence: 99%

“…Figure c illustrates a magnified curve of the photocurrent response during one on–off illumination switching of 2 s for the NGQDs–perovskite/mrGO device. The rise or fall time was measured to be 13 or 10 ms, revealing its ultrafast photoresponse rate among all the photodetectors with graphene or rGO sensing layers . To reveal the mechanism of the fast photoresponse, time‐resolved photoluminescence (TRPL) decay was employed to measure the carrier lifetime in the pristine perovskite and the NGQDs–perovskite sample (Figure d).…”

Section: Performance Comparison Between the Ngqds–perovskite/mrgo Phomentioning

confidence: 99%

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A Solution‐Processed High‐Performance Phototransistor based on a Perovskite Composite with Chemically Modified Graphenes

Liu

Sun

et al. 2017

Advanced Materials

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Phototransistors with a structure of a nitrogen-doped graphene quantum dots (NGQDs)-perovskite composite layer and a mildly reduced graphene oxide (mrGO) layer are fabricated through a solution-processing method. This hybrid phototransistor exhibits broad detection range (from 365 to 940 nm), high photoresponsivity (1.92 × 10 A W ), and rapid response to light on-off (≈10 ms). NGQDs offer an effective and fast path for electron transfer from the perovskite to the mrGO, resulting in the improvement of photocurrent and photoswitching characteristics. The high photoresponsivity can also be ascribed to a photogating effect in the device. In addition, the phototransistor shows good stability with poly(methyl methacrylate) encapsulation, and can maintain 85% of its initial performance for 20 d in ambient air.

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Section: Performance Comparison Between the Ngqds–perovskite/mrgo Phomentioning

confidence: 99%

Section: Performance Comparison Between the Ngqds–perovskite/mrgo Phomentioning

confidence: 99%

A Solution‐Processed High‐Performance Phototransistor based on a Perovskite Composite with Chemically Modified Graphenes

Liu

Sun

et al. 2017

Advanced Materials

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“…Chitara et al obtained a responsivity of 0.12 AW -1 and 40 % EQE at 360 nm irradiation using rGO synthesized in DMF with toxic hydrazine mono hydrate (Chitara et al, 2011). Thermally reduced graphene oxide has been studied by Chowdhury et al, andChang et al (Chowdhury et al, 2014, Chang et al, 2013). Chowdhury et al found a maximum responsivity of 0.55 A.W -1 and EQE of 57% at 2 V using IR bulb.…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide-based broad band photodetector and temperature sensor: effect of gas adsorption on optoelectrical properties

2018

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Reduced graphene oxide (rGO) has found tremendous application due to its versatile and tunable properties. We have prepared rGO by green hydrothermal method without using any toxic additives that comprise of ~ 5-14 layers with an average interlayer distance of 3.5 Å. Device with Ag-rGO-Ag configuration has been fabricated that exhibits excellent stable and reproducible photoresponse properties ranging from UV-VIS (ultraviolet-visible) to near IR (infrared) region. Responsivity and external quantum efficiency (EQE) values are as high as 0.71, 0.733, 0.230 and 0.313A.W-1 and 57, 85, 88 and 120% using 1550, 1064, 632 and 325 nm wavelength, respectively. We have shown that the temperature-dependent resistance follows a well-definite exponential behavior which indicates potential application of rGO as temperature sensor. Overall, these results suggest that rGO can be a potential material for low-cost, environment-friendly and efficient broadband photodetector and temperature sensor. Also,

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“…Nanomaterials made of metals, semiconductors, or oxides are of particular interest for their special mechanical, thermal, electrical, magnetic, optical, biological, chemical and other properties (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). The properties of materials with nanometer dimensions are significantly different from those of atoms and bulks materials.…”

Section: Introductionmentioning

confidence: 99%

Structural, mechanical, and electrical properties of carbon nanoparticles synthesized from diesel

Hossain

Islam

Chowdhury

et al. 2015

Fullerenes, Nanotubes and Carbon Nanostructures

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Downloaded by [University of Nebraska, Lincoln] at 03:05 10 October 2015 ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2 We studied the elemental analysis, structural morphology, mechanical, and electrical properties of carbon nanoparticles synthesised from diesel. The spherical carbon particles size in the range of about 10 to 80 nm in diameter was observed in SEM studies which were identified by AFM study as an aggregation of carbon particles of average size 2.5 nm. The surface rms of carbon nanoparticle thin film (CNTF) was measured directly by AFM and found 0.22 nm. The DMT elastic modulus of carbon nanoparticles (CNP) was measured by PeakForce QNM mode of AFM. The minimum and maximum elastic modulus was measured of 0.40 GPa and 43.89 GPa respectively. The resistivity, conductivity, magneto resistance, mobility and average Hall coefficient were measured by 'Ecopia Hall-effect measurement system' by 4-point Van der Pauw approach at ambient condition. We demonstrated I-V characteristic at the Indium/CNTF thin film interface which is accompanied by rectifying behavior.

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Thermally reduced solution-processed graphene oxide thin film: An efficient infrared photodetector

Cited by 25 publications

References 48 publications

A Solution‐Processed High‐Performance Phototransistor based on a Perovskite Composite with Chemically Modified Graphenes

A Solution‐Processed High‐Performance Phototransistor based on a Perovskite Composite with Chemically Modified Graphenes

Reduced graphene oxide-based broad band photodetector and temperature sensor: effect of gas adsorption on optoelectrical properties

Structural, mechanical, and electrical properties of carbon nanoparticles synthesized from diesel

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