Remarkable Conversion Between n- and p-Type Reduced Graphene Oxide on Varying the Thermal Annealing Temperature

Herein we report a electrode in the hybrid structure of the silver nanowires (AgNWs) with reduced graphene oxide (rGO) deposited on glass or PET substrate. The assembly and contacting in procedures of this hybrid film have been strongly affected by preparation conditions, especially annealing temperature. In this work, we have investigated the effects of thermal annealing on interconnected at nanowire junctions and between AgNWS network and rGO films via their sheet resistance and transmission. The annealing temperature was varied from 120\(^{\circ}\)C to 180\(^{\circ}\)C with 10\(^{\circ}\)C step to find out optimal temperature at which the wires can be joined together. The results show that at 170\(^{\circ}\)C, the sheet resistance and transmission of the hybrid rGO/Ag NW film are \(R_{s} = 10.7\;\Omega\) sq\(^{ - 1 }\) and \(T = 77\)% (at wavelength 550 nm) corresponding to the ratio of direct conductivity to optical conductivity \(\sigma _{DC}/\sigma _{OP} = 126\) which is the best obtained value. It is expected that the hybrid AgNWS/rGO film can replace ITO film in the near future.

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Carrier transport and photoresponse for heterojunction diodes based on the reduced graphene oxide-based TiO2 composite and p-type Si

Applied Physics A ◽

10.1007/s00339-013-8166-5 ◽

2013 ◽

Vol 116 (1) ◽

pp. 91-95 ◽

Cited By ~ 5

Author(s):

Yow-Jon Lin ◽

Shih-Hung Yang

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Carrier Transport ◽

Reduced Graphene ◽

Heterojunction Diodes ◽

P Type

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The effects of annealing temperature on the permittivity and electromagnetic attenuation performance of reduced graphene oxide

Applied Physics Letters ◽

10.1063/1.5028472 ◽

2018 ◽

Vol 112 (19) ◽

pp. 192902 ◽

Cited By ~ 18

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Annealing Temperature ◽

Reduced Graphene

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Thermally reduced graphene oxide showing n- to p-type electrical response inversion with water adsorption

Applied Surface Science ◽

10.1016/j.apsusc.2020.147285 ◽

2020 ◽

Vol 531 ◽

pp. 147285

Author(s):

Azhar Ali Haidry ◽

Zhe Wang ◽

Qawareer Fatima ◽

Ali Zavabeti ◽

Lijuan Xie ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Water Adsorption ◽

Electrical Response ◽

Reduced Graphene ◽

P Type

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Morphological Studies on the Agglomeration of FeCo Supported Nitrogen-doped Reduced Graphene Oxide Catalyst Prepared at Varying Annealing Temperature

Jurnal Kejuruteraan ◽

10.17576/jkukm-2018-si1(1)-05 ◽

2018 ◽

Vol SI1 (1) ◽

pp. 31-36

Author(s):

Kee Shyuan Loh ◽

◽

Shuaiba Samad ◽

Yusra Nadzirah Yusoff ◽

Wai Yin Wong

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Annealing Temperature ◽

Oxide Catalyst ◽

Nitrogen Doped ◽

Morphological Studies ◽

Reduced Graphene

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N-doped reduced graphene oxide for room-temperature NO gas sensors

Scientific Reports ◽

10.1038/s41598-021-99883-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Yu-Sung Chang ◽

Feng-Kuan Chen ◽

Du-Cheng Tsai ◽

Bing-Hau Kuo ◽

Fuh-Sheng Shieu

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Room Temperature ◽

Gas Sensing ◽

Ambient Conditions ◽

Gas Sensitivity ◽

Nitrogen Doped ◽

Low Concentrations ◽

Reduced Graphene ◽

P Type

AbstractIn this study, we use nitrogen-doped to improving the gas-sensing properties of reduced graphene oxide. Graphene oxide was prepared according to a modified Hummers’ method and then nitrogen-doped reduced graphene oxide (N-rGO) was synthesized by a hydrothermal method using graphene oxide and NH4OH as precursors. The rGO is flat and smooth with a sheet-like morphology while the N-rGO exhibits folded morphology. This type of folding of the surface morphology can increase the gas sensitivity. The N-rGO and the rGO sensors showed n-type and p-type semiconducting behaviors in ambient conditions, respectively, and were responsive to low concentrations of NO gases (< 1000 ppb) at room temperature. The gas-sensing results showed that the N-rGO sensors could detect NO gas at concentrations as low as 400 ppb. The sensitivity of the N-rGO sensor to 1000 ppb NO (1.7) is much better than that of the rGO sensor (0.012). Compared with pure rGO, N-rGO exhibited a higher sensitivity and excellent reproducibility.

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