Graphene doped TiO2/p-silicon heterojunction photodiode

Hendi, A.A.; Yakuphanoğlu, F.

doi:10.1016/j.jallcom.2016.01.045

Cited by 51 publications

(17 citation statements)

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“…Materials such as titania [180,181] and zinc oxide [182] are successfully used for the construction of p-silicon heterojunction photodiodes. Al-Hazami and Yakuphanoglu [162] used a binary combination of these materials to build a p-type diode.…”

Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

“…The use of polymer matrices such as the commercial Pluronic P123 or F127 (poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)—PEG-PPG-PEG) is becoming more and more popular in the synthesis of titania-based materials [169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198]. Fan et al [29] developed a method of synthesizing a TiO 2 -ZrO 2 oxide system using Pluronic123 (P123) and Macrogol20000 (PEG) matrices.…”

Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

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Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

2018

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Titania has properties that enable it to be used in a variety of applications, including self-cleaning surfaces, air and water purification systems, hydrogen evolution, and photoelectrochemical conversion. In order to improve the properties of titanium dioxide, modifications are made to obtain oxide/hybrid systems that are intended to have the properties of both components. In particular, zinc oxide, zirconia and molybdenum disulfide have been proposed as the second component of binary systems due to their antibacterial, electrochemical and photocatalytic properties. This paper presents a review of the current state of knowledge on the synthesis and practical utility of TiO2-ZnO and TiO2-ZrO2 oxide systems and TiO2-MoS2 hybrid materials. The first part focuses on the hydrothermal method; then a review is made of the literature on the synthesis of the aforementioned materials using the sol-gel method. In the last section, the literature on the electrospinning method of synthesis is reviewed. The most significant physico-chemical, structural and dispersive-morphological properties of binary hybrid systems based on TiO2 are described. A key aim of this review is to indicate the properties of TiO2-ZnO, TiO2-ZrO2 and TiO2-MoS2 hybrid systems that have the greatest importance for practical applications. The variety of utilities of titania-based hybrid materials is emphasized.

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Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

2018

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“…[2,7] Titanium dioxide (TiO 2 ) that is a member of the metal oxides family mentioned earlier has attracted intensive attention for optoelectronic applications due to its excellent properties, such as non-toxicity, low cost, simple preparation, wide optical bandgap, high stability, and photoactive properties. [8,9] TiO 2 is extensively used and studied in many applications, such as gas detection, photocatalysis, UV detectors, and perovskite-based solar cells (as an electron transport layer). [8,10] However, the transient localization of electrons in the sub-bandgap restricts the electrical conduction of TiO 2 .…”

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confidence: 99%

The Optoelectrical Properties of Li: TiO₂/p‐Si Photodiodes for Various Li Doping

Rüzgar

2020

Physica Status Solidi (a)

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TiO 2 has received intense attention for optoelectronic applications due to its excellent properties, such as non-toxicity, low cost, and simple preparation. Herein, the influence of Li doping both on the structural and optical characteristics of TiO 2 thin films and on optoelectronic properties of TiO 2-based photodiodes is investigated. The root-mean-square (RMS) roughness values obtained from the atomic force microscopy (AFM) results and the optical bandgap energies calculated from the Tauc method vary between 3.40 and 24.53 nm and between 3.58 and 3.75 eV depending on the increase in Li doping, respectively. The ideality factor (n) values of the diodes, which provided information about the performance of diodes, are calculated between 5.92 and 9.74. The lowest n value of 5.92 is obtained for 2% Li-doped diode. All the fabricated diodes demonstrate a good photodiode behavior, and the maximum photoresponsivity value of 6.74 Â 10 À2 A W À1 is obtained for 10% Li:TiO 2. In addition, the C-V, G-V, and R s-V characteristics of diodes are examined for different frequencies. Li doping has improved the optoelectrical performance of the TiO 2-based photodiodes. Thus, the Li:TiO 2-based photodiode can be a candidate for optoelectronic applications.

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“…The change in R s is indicative of interface charges following the frequency of the applied electric field. The peak intensity is related to the number of interface states under various frequencies [61][62][63][64].…”

Section: Capacitance/conductance-voltage (C/g-v) Measurementsmentioning

confidence: 99%

Structural, Electrical and Photoresponse Properties of Si-based Diode with Organic Interfacial Layer Containing Novel Cyclotriphosphazene Compound

Yakuphanoğlu

Koran

Özen

et al. 2017

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The electrical and photoresponse properties of an Al/p-Si/organic layer/Al diode were investigated. The organic layer containing novel 2,2-bis[spiro(7,8-dioxy-4-methylcoumarin)]-4,4,6,6-bis[spiro(2',2"-dioxy-1',1"biphenylyl)]cyclotriphosphazene compound was coated by the drop casting method on p-Si having ohmic contact. The structural characterization of the novel cyclotriphosphazene compound was confirmed by using 1 H, 13 C and 31 P-NMR, elemental analysis and FTIR spectroscopic techniques. The diode exhibits a photoconducting and photodiode behavior under solar light illumination. The electrical parameters such as ideality factor, barrier height and series resistance of the diode were determined from I-V characteristics. It is seen that the photocurrent of the diode under illumination is higher than the dark current. Also, the frequency dependence of capacitance (C) and conductance (G) was explained on the basis of interface states. It is evaluated that the hybrid photodiode can be used as a photosensor in organic photodetector applications.

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Graphene doped TiO2/p-silicon heterojunction photodiode

Cited by 51 publications

References 38 publications

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

The Optoelectrical Properties of Li: TiO₂/p‐Si Photodiodes for Various Li Doping

Structural, Electrical and Photoresponse Properties of Si-based Diode with Organic Interfacial Layer Containing Novel Cyclotriphosphazene Compound

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Graphene doped TiO2/p-silicon heterojunction photodiode

Cited by 51 publications

References 38 publications

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

The Optoelectrical Properties of Li: TiO2/p‐Si Photodiodes for Various Li Doping

Structural, Electrical and Photoresponse Properties of Si-based Diode with Organic Interfacial Layer Containing Novel Cyclotriphosphazene Compound

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The Optoelectrical Properties of Li: TiO₂/p‐Si Photodiodes for Various Li Doping