Effects of Temperature and Humidity on Electrical Properties of Organic Semiconductor Orange Dye Films Deposited from Solution

Моиз, С. А.; Ahmed, M. M.; Karimov, Khasan S.

doi:10.1143/jjap.44.1199

Cited by 40 publications

(12 citation statements)

References 3 publications

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“…These protonated sites are named as charged sites and H-bond accepting/donating sites, Zeng et al explained how these sites contribute in the conduction mechanism of PANI. [7] It is also believed that the H + ions produced as a result of the dissociation of water molecules react with the orange dye and generate holes [17] 2H…”

Section: Resultsmentioning

confidence: 99%

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Orange dye—polyaniline composite based impedance humidity sensors

et al. 2013

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This study presents the fabrication and investigation of humidity sensors based on orange dye (OD) and polyaniline (PANI) composite films. A blend of 3 wt.% OD with 1 wt.% PANI was prepared in 1 ml water. The composite films were deposited on glass substrates between pre-deposited silver electrodes. The gap between the electrodes was 45 μm. The sensing mechanism was based on the impedance and capacitance variations due to the absorption/desorption of water vapor. It was observed that with the increase in relative humidity (RH) from 30% to 90%, the impedance decreases by 5.2×104 and 8.8×103 times for the frequencies of 120 Hz and 1 kHz, respectively. The impedance—humidity relationship showed a more uniform change compared to the capacitance—humidity relationship in the RH range of 30% to 90%. The consequence of annealing, measuring frequency, response and recovery time, and absorption—desorption behavior of the humidity sensor were also discussed in detail. The annealing resulted in an increase in sensitivity of up to 2.5 times, while the measured response time and recovery time were 34 s and 450 s, respectively. The impedance—humidity relationship was simulated.

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Section: Resultsmentioning

confidence: 99%

“…[15] In earlier studies, our group has investigated OD for different semiconducting devices. [14][15][16][17]…”

Section: Introductionmentioning

confidence: 99%

Orange dye—polyaniline composite based impedance humidity sensors

et al. 2013

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“…Despite all of these successes, the complete picture of charge-transport mechanism, which is highly crucial for further achievements, is still not clear [31][32][33][34][35][36][37][38][39][40]. Due to such ambiguity, different charge transport models are reported to validate the experimental results performed on various polymer devices [41][42][43][44][45][46][47][48][49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Space Charge–Limited Current Model for Polymers

Моиз¹,

Khan²,

Younis³

et al. 2016

Conducting Polymers

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Polymers have exceptional charge transport mechanism as a combination of delocalization and localization of charge carriers with intramolecular and intermolecular charge interaction, respectively, and most of the time, it is interpreted with Mott-Gurney space charge-limited current model. As polymers are full of traps, therefore, Mott-Gurney space charge-limited model is modified with various trap distributions as trapped space charge-limited model. The most crucial parameter affected by the nature and distribution of traps is the carrier mobility, and it is argued that space charge-limited model is an acceptable choice for the mobility measurement for polymer. Similarly, in order to account the commonly observed lowering of trap barrier height at higher electric field, the Mott-Gurney space charge-limited current is further modified with little variations, which are evaluated and discussed in detail.

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“…Organic/inorganic heterojunctions have wide applications in solar cells, photodetectors, light emitting diodes, communication systems, and industry [1][2][3][4][5]. The generation of interface traps are one of the main reasons of instability and poor performance of these devices [6].…”

Section: Introductionmentioning

confidence: 99%

Frequency Dependent Electrical Characteristics οf Au/n-Si/CuPc/Au Heterojunction

et al. 2010

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Electrical characteristics of the heterojunction fabricated by thermal deposition of copper phthalocyanine (CuPc) on an n-silicon substrate have been investigated. The frequency has significant effect on capacitance (C), conductance (G) and series resistance (R s ) interface states (D it ) of the junction. Measured capacitance and conductance were corrected for R s . The conductance technique was used to measure the density of the interface states. This method revealed the value of the interface state density distribution for the Au/n-Si/CuPc/Au interfaces of the order of 10 12 cm −2 eV −1 .

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Effects of Temperature and Humidity on Electrical Properties of Organic Semiconductor Orange Dye Films Deposited from Solution

Cited by 40 publications

References 3 publications

Orange dye—polyaniline composite based impedance humidity sensors

Orange dye—polyaniline composite based impedance humidity sensors

Space Charge–Limited Current Model for Polymers

Frequency Dependent Electrical Characteristics οf Au/n-Si/CuPc/Au Heterojunction

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