Electrical characterization of solar sensitive zinc oxide doped-amorphous carbon photodiode

Koç, Mümin Mehmet; Aslan, Naim; Erkovan, Mustafa; Aksakal, Bünyamin; Uzun, Orhan; Farooq, W. A.; Yakuphanoğlu, F.

doi:10.1016/j.ijleo.2018.10.008

Cited by 45 publications

(19 citation statements)

References 57 publications

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“…EDLC consists of porous, conductive materials, such as activated carbons, which have a high surface area that allows for greater electrolyte accessibility and thus greater energy storage [5]. Various carbon based materials such as graphite, black carbon, carbon nanotubes which are main materials of technological applications are used as EDLC [6][7][8]. Pseudo capacitors have reversible Faradaic reactions where charge is obtained by redox reaction between electrochemically active materials and electrolyte [9].…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole Modified Graphite Electrode for Supercapacitor Application: The Effect of Cycling Electrolytes

Yavuz

Aktas

Durdu

2019

Sakarya University Journal of Science

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Graphite electrode was modified by polypyrrole (PPy) thin film. PPy was electrodeposited potentiostatically by applying-1.5 V from acidic aqueous solution having pyrrole monomers. The waiting time of deposition solution effect the surface coverage of resulted films. PPy modified electrodes fabricated by old solution have lower surface coverage than PPy obtained from freshly prepared solution. PPy films were transferred to aqueous (acidic, neutral, alkaline) and a non-aqueous (Deep Eutectic Solvent) solutions for cycling. Capacitance performance of PPy film in a choline chloride based ionic liquid (Ethaline) was compared with that of PPy films in aqueous solutions. As PPy film in salt solution (LiClO4 and NaCl) was evolved because deposition electrolyte was different (H2SO4) than deposition electrolyte and salt ions are exchanged at the beginning of cycling. Film obtained in acidic media was transferred into alkaline solution or ionic liquid is electroinactive. PPy film is strongly electroactive in an acidic media for hundreds of cycles as acidic media can cause the highest charge which is directly related to capacitive performance. Upon increasing pH value of cycling electrolyte, current and charge value decreases. PPy film in a salt solution (NaCl or LiClO4 in water) and acidic solution (H2SO4) is electroactive and can be used for supercapacitor application. As PPy film in ionic liquids and alkaline solution cannot be electroactive, they cannot be used for supercapacitor applications. Capacity retention of PPy in KOH and Ethaline is low (around 5%). However, PPy thin film in H2SO4 has 77% of capacitance retention after 500 scans.

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Section: Introductionmentioning

confidence: 99%

Polypyrrole Modified Graphite Electrode for Supercapacitor Application: The Effect of Cycling Electrolytes

Yavuz

Aktas

Durdu

2019

Sakarya University Journal of Science

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“…Bazargan et al [49] employed a photodetector based on reduced graphene oxide (rGO) and ZnO thin film. Koç et al [50] fabricated and investigated current-voltage characteristics of ZnO-amorphous carbon photodiodes.…”

Section: Introductionmentioning

confidence: 99%

Effect of various PCBM doping on the interfacial layer of Al/PCBM:ZnO/p-Si photodiodes

Öztürk

2021

J Mater Sci: Mater Electron

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The light can be detected by various devices such as photoconductors, photodetectors, phototransistors, solar cells and photodiodes, and the light can be employed energy harvesting as well as sensing applications. Various materials can be utilized to raising of the efficiency of light-based devices. In present study, metalsemiconductor (MS) devices with various [6,6]-Phenyl C61-butyric acid methyl ester (PCBM) doped zinc oxide (ZnO) interfacial layer were fabricated for photodiode applications. Commercially purchased PCBM and ZnO were mixed in order to obtain undoped, 3%, 5%, and 10% PCBM doped ZnO interfacial layer for Al/PCBM:ZnO/p-Si devices. The obtained solutions were layered on the p-type silicon (p-Si) substrades by spin coating method. The thermal evaporation technique was utilized to deposit Al metal electrodes both back and front sides. The morphological properties of the fabricated devices were characterized by AFM. The morphological images of the AFM revealed that PCBM doping affected the surface morphology as well as surface roughness of the ZnO layers. I-V measurements were carried out in the dark and under varying illumination conditions for electrical properties. The devices exhibited good rectifying properties at around 10 3 rates, both dark and various illumination conditions, according to I-V graphs. The junction parameters of the produced devices were determined by using thermionic emission, Norde, and Cheung models from the I-V characteristics of the devices. The devices have high ideality factors and these values generally fluctuate with varying PCBM doping amounts. The current transient measurements show that PCBM doping provide increasing in the light response capacity. According to the results, the devices can be employed as photodiode and photodetector applications for the further works in the industry.

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“…Organic based molecules were often considered as fabrication materials, since they are easy to synthesize and abundant in the nature [1]- [3]. However, organic material based devices have some drawbacks such as instability, fragility and short lifetime [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, different alternatives were applied. For example, organic material based photodiodes were often produced in composite forms or doped with other materials such as nanoparticles [1], [6]. It was evidenced by different papers that such a solution enhance mechanic, electric and optoelectronic properties of the photodiodes [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

INFRARED DETECTING BEHAVIOURS OF Cu2NiSnS4 PHOTODIODES

İlhan

Koç

2020

Kırklareli Üniversitesi Mühendislik Ve Fen Bilimleri Dergisi

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A photodetector in Al/p-Si/Cu2NiSnS4/Al form was fabricated with sol-gel method. The structural assessment of the photodetectors was investigated and Cu2NiSnS4 structures were formed in nanostructure in granular form. Current-time and current-voltage investigations illustrated that Cu2NiSnS4 photodiodes have infrared sensing properties. Photodetection properties such as linear dynamic rate, ideality factor, photosensitivity and photoresponse characteristics were assessed. Results also validate the infrared sensing properties of the diodes. The barrier height of the Cu2NiSnS4 diodes is calculated as 0.466 eV. Ideality factor of the diodes was found to be 5.16. Results indicate that our Cu2NiSnS4 photodetectors are suitable for infrared tracking device applications.

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Electrical characterization of solar sensitive zinc oxide doped-amorphous carbon photodiode

Cited by 45 publications

References 57 publications

Polypyrrole Modified Graphite Electrode for Supercapacitor Application: The Effect of Cycling Electrolytes

Polypyrrole Modified Graphite Electrode for Supercapacitor Application: The Effect of Cycling Electrolytes

Effect of various PCBM doping on the interfacial layer of Al/PCBM:ZnO/p-Si photodiodes

INFRARED DETECTING BEHAVIOURS OF Cu2NiSnS4 PHOTODIODES

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