Effect of thermal annealing on structural and optical properties of titanyl phthalocyanine thin films

El-Nahass, M.M.; Afify, Hany A.; Gadallah, A.–S.; Hassanien, A.M.; Khedr, Mohamed Atta

doi:10.1016/j.mssp.2014.06.028

Cited by 25 publications

(11 citation statements)

References 34 publications

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“…Fig. 1(b) shows the energy band diagram of the Ag/ TiOPc/p-Si/Al heterojunction based on reported data for the involved materials [19,24]. Fig.…”

Section: Current-voltage Characteristicsmentioning

confidence: 99%

“…From our previous work on the optical properties of TiOPc [19], the value of the dielectric constant was evaluated to be 3.04 giving a permittivity ε of 2.69 Â 10 -11 F m À 1 . Substituting this value in Eq.…”

Section: Current-voltage Characteristicsmentioning

confidence: 99%

“…Due to its excellent photosensitive and electrical properties, TiOPc has been used in various applications including organic photodetectors [12], photovoltaic cells [11,13], organic light emitting diodes (OLEDs) [14], organic thin-film transistors [15], gas sensors [16], organic memories [17], and non-toxic organic photoconductors in electrographic [18]. Recently, we have reported the effect of thermal annealing on the structural and optical properties of TiOPc thin films [19]. Sensing in near-infrared (NIR) region is of high importance, since NIR photodetectors have many potential applications such as optical communications, imaging systems, night vision, day-and night-time surveillance, remote controls, and quality control [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Carrier transport mechanisms and photodetector characteristics of Ag/TiOPc/p-Si/Al hybrid heterojunction

Afify

El-Nahass

Gadallah

et al. 2015

Materials Science in Semiconductor Processing

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“…Fig. 1(b) shows the energy band diagram of the Ag/ TiOPc/p-Si/Al heterojunction based on reported data for the involved materials [19,24]. Fig.…”

Section: Current-voltage Characteristicsmentioning

confidence: 99%

Section: Current-voltage Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Carrier transport mechanisms and photodetector characteristics of Ag/TiOPc/p-Si/Al hybrid heterojunction

Afify

El-Nahass

Gadallah

et al. 2015

Materials Science in Semiconductor Processing

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“…It is well-known that polycrystalline vacuum-deposited TiOPc films exist in, at least, two temperature polymorphs. [11][12][13][14][15] The room-temperature polymorph is ascribed as phase I (or β), the high-temperature one -as phase II (or α). All polymorphic modifications of TiOPc are extensively studied in the literature.…”

Section: Methodsmentioning

confidence: 99%

NIR Photoresponse of Perovskite Solar Cells with Titanyl Phthalocyanine

Travkin¹,

Fedoseev²,

Sachkov³

et al. 2019

MHC

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The effect of titanyl phthalocyanine TiOPc in the methylammonium lead triiodide (MAPbI 3) perovskite based solar cells is studied. The photovoltaic output of cells at low intensity illumination with l max = 840 nm is greatly enhanced when using TiOPc as a NIR-absorbing hole conductor. Compared to the reference cells with a standard cuprous iodide CuI as a hole-transporting layer, the photocurrent increases by a factor of 15, so that the narrow-band power conversion efficiency (PCE) exceeds 2 %. It should be pointed out that the irradiation wavelength lies beyond the intrinsic absorption of MAPbI 3 or any other material in the device scheme except TiOPc. The improvement is associated with the photoactivity of TiOPc molecules in the near infrared region due to the largely splitted Q-band, as confirmed by the dependence of parameters on the polymorph transition in the TiOPc films.

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“…We transformed the relative spectral data of the optical transmittance T and the reflectance R obtained directly from the spectrophotometer into the corresponding absolute values T and R by making corrections to eliminate the absorbance and reflectance of the substrate. Then the absolute T value is given by [15][16][17]  …”

Section: Experimental Techniquesmentioning

confidence: 99%

Structural and optical characterizations of thin organic films of thioindigo

Khusayfan¹,

El-Nahass²

2016

Ukr. J. Phys. Opt.

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Abstract. We report on the structural and optical properties of the nanorods available in thermally evaporated thin films of thioindigo (TI). The structural features are investigated using X-ray diffraction, transmission electron microscopy and Fourier-transform infrared spectroscopy techniques. The optical constants of asdeposited thin TI films are determined in the wavelength region 200-2500 nm, using spectrophotometric measurements for the nearly normal light incidence. The type of optical transitions for the TI films is ascertained from the dispersion of their absorption coefficient. The real part of the refractive index in the region of optical transparency is analyzed basing on single-oscillator and Drude models. The thirdorder nonlinear susceptibility is obtained from the single-oscillator model and the Miller's rule.

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Effect of thermal annealing on structural and optical properties of titanyl phthalocyanine thin films

Cited by 25 publications

References 34 publications

Carrier transport mechanisms and photodetector characteristics of Ag/TiOPc/p-Si/Al hybrid heterojunction

Carrier transport mechanisms and photodetector characteristics of Ag/TiOPc/p-Si/Al hybrid heterojunction

NIR Photoresponse of Perovskite Solar Cells with Titanyl Phthalocyanine

Structural and optical characterizations of thin organic films of thioindigo

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