Humidity dependent electrical properties of an organic material DMBHPET

Azmer, Mohamad Izzat; Ahmad, Zubair; Sulaiman, Khaulah; Al‐Sehemi, Abdullah G.

doi:10.1016/j.measurement.2014.10.048

Cited by 28 publications

(12 citation statements)

References 28 publications

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“…There are several factors that act to determine the performance and the advantage of the humidity-measuring instrument. These include properties such as fast reaction time, physically and chemically stable active compounds, linear behavior, suitable detection range, good strength, resistance against pollution and cheaper fabrication cost 8 9 10 11 . In this context, deoxyribonucleic acid (DNA) has been reported to demonstrate properties useful for utilization as a humidity sensing material.…”

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confidence: 99%

Humidity influenced capacitance and resistance of an Al/DNA/Al Schottky diode irradiated by alpha particles

Al-Ta’ii

Amin

Periasamy

2016

Sci Rep

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Deoxyribonucleic acid or DNA based sensors, especially as humidity and alpha particle sensors have become quite popular in recent times due to flexible and highly optimizable nature of this fundamental biomaterial. Application of DNA electronics allow for more sensitive, accurate and effective sensors to be developed and fabricated. In this work, we examined the effect of different humidity conditions on the capacitive and resistive response of Aluminum (Al)/DNA/Al Schottky barrier structure when bombarded by time-dependent dosages of alpha particles. Based on current-voltage profiles, which demonstrated rectifying behaviours, Schottky diode parameters such as ideality factor, barrier height and series resistance was calculated. Results observed generally pointed towards a decrease in the resistance value from the pristine to the radiated structures. It was also demonstrated that under the effect of humidity, the capacitance of the DNA thin film increased from 0.05894 to 92.736 nF, with rising relative humidity level. We also observed the occurrence of the hypersensitivity phenomena after alpha irradiation between 2 to 4 min by observing a drop in the series resistance, crucial in the study of DNA damage and repair mechanisms. These observations may also suggest the exciting possibility of utilizing Al/DNA/Al Schottky diodes as potentially sensitive humidity sensors.

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confidence: 99%

Humidity influenced capacitance and resistance of an Al/DNA/Al Schottky diode irradiated by alpha particles

Al-Ta’ii

Amin

Periasamy

2016

Sci Rep

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“…Moreover, acidic ligands would be promising positions to transfer the electrons from dyes to the TiO 2 surface. Additionally, it has been studied that the dye which shows high affinity for H 2 O molecules would lead to the proficient humidity sensor (Azmer et al, 2015). In our studied TPA dyes, the carboxylic group would be the favorable site and shows high affinity for H 2 O molecules.…”

Section: Electron Injectionmentioning

confidence: 98%

Electro-optical and charge injection investigations of the donor-π-acceptor triphenylamine, oligocene–thiophene–pyrimidine and cyanoacetic acid based multifunctional dyes

Irfan

Muhammad

Al-Assiri

et al. 2015

Journal of King Saud University - Science

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The corner stone of present study is to tune the electro-optical and charge transport properties of donor-bridge-acceptor (D-p-A) triphenylamine (TPA) derivatives. In the present investigation, an electron deficient moiety (pyrimidine), electron-rich moiety (thiophene) and oligocene (benzene, naphthalene, anthracene, tetracene and pentacene) have been incorporated as p-spacer between the donor TPA unit and cyanoacetic acid acceptor and anchoring group. The elongation of bridge usually affects the energy levels, i.e., higher the highest occupied molecular orbital (HOMO) while lower the lowest unoccupied molecular orbital (LUMO) thus reduces the HOMO-LUMO energy gap. The lowered LUMO energy levels of cyano-{2-[6-(4-diphenylaminophenyl)-pyrimidin-4-yl]-tetraceno[2,3-b]thiophen-8-yl}-acetic acid (TPA-PTT4) and cyano-{2-[6-(4 -diphenylamino-phenyl)-pyrimidin-4-yl]-pentaceno[2,3-b]thiophen-9-yl}-acetic acid (TPA-PPT5) dyes revealed that electron injected from dye to semiconductor surface might be auxiliary stable resulting in impediment of quenching. The broken co-planarity between the p-spacer conceiving

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“…With the aim to develop high‐performance humidity sensors, chemical modification of the active film by means of chemical reactions has previously been considered . In the case of organic semiconductors, the presence of functional groups attached to basic‐conjugated backbone structure significantly determines the resulting chemical and physical attributes of the materials.…”

Section: Organic Materials For Humidity Sensorsmentioning

confidence: 99%

Organic Thin‐Film Capacitive and Resistive Humidity Sensors: A Focus Review

Najeeb

Ahmad

Shakoor

2018

Adv Materials Inter

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157

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In this paper, organic‐based capacitive and resistive humidity sensors, starting from the fundamental working principles, designs, and characterization, are reviewed. The prevalent adoptions of recent technology in the fabrication of the organic humidity sensors are also discussed. This paper is envisioned to serve as a complete reference guide for researchers who are looking forward to developing a more reliable, economical, and effective humidity sensor using organic/polymeric materials.

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Humidity dependent electrical properties of an organic material DMBHPET

Cited by 28 publications

References 28 publications

Humidity influenced capacitance and resistance of an Al/DNA/Al Schottky diode irradiated by alpha particles

Humidity influenced capacitance and resistance of an Al/DNA/Al Schottky diode irradiated by alpha particles

Electro-optical and charge injection investigations of the donor-π-acceptor triphenylamine, oligocene–thiophene–pyrimidine and cyanoacetic acid based multifunctional dyes

Organic Thin‐Film Capacitive and Resistive Humidity Sensors: A Focus Review

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