The effect of growth parameters on the electrical, optical and structural properties of copper phthalocyanine thin films

Suresh, Akkihebbal K.; Menon, C. S.

doi:10.1016/s0040-6090(98)01744-1

Cited by 146 publications

(51 citation statements)

References 14 publications

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“…The electrical and optical properties of these organic thin films largely depend on the evaporation rate, substrate temperature and post evaporation annealing. The earlier works [8] in this field established that the electrical conductivity and activation energy of pure Phthalocyanines exhibit a marked dependence on the impurity concentrations. In the application of solar cells lowering the resistance is a desirable property in the short circuit photo current and open circuit photo potential.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity studies of mixed phthalocyanine thin films

Varghese¹,

Menon²

2005

Open Physics

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Thin films of mixed of Copper Phthalocyanine (CuPc) and Nickel Phthalocyanine (NiPc) are deposited onto a pure glass substrate by a simultaneous thermal evaporation technique at room temperature. The material D.C electrical conductivity of films at room temperature and also films annealed at 523 K has been investigated. The optical absorption and band gaps of the films are also measured. The results show that the electrical resistance is lower for the mixed films compared with the pure samples and also the optical band gap decreases for the mixed samples compared to the pure samples.

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Section: Introductionmentioning

confidence: 99%

Electrical conductivity studies of mixed phthalocyanine thin films

Varghese¹,

Menon²

2005

Open Physics

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“…The values for the as-deposited samples were higher than those reported by Ambily and Menon [13]. This may be attributed to the difference in P/R (the ratio of the deposition rate and chamber pressures).…”

Section: Effect Of Y-radiation On the Optical Properties Of Cupc Thincontrasting

confidence: 61%

Effect of γ-radiation on the conduction mechanism of thermal vacuum deposited copper phthalocyanine thin films

Arshak

Zleetni²,

Arshak³

et al.

Proceedings of the 2001 1st IEEE Conference on Nanotechnology. IEEE-NANO 2001 (Cat. No.01EX516)

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The dosimetry properties of thermally evaporated Copper Phthalocyanine (CuPc) thin films were investigated. The conduction mechanism of the asdeposited films was found to be space-charge-limited and their relative permittivity was within the range reported by others [l, 2, 3, 41. The Poole-Frenkel effect became more dominant for the irradiated samples and they displayed large increase in permittivity and colour centre density, although the energies of their optical band gap and trapping levels did not change. The observed linear relationship between the absorbance at 615 nrn and the y-radiation doses validated the use of CuPc as an optical sensor dosimeter especially for low radiation doses. Samples showed a higher radiation tolerance after being annealed for one hour at a temperature of only 323 K. Annealing also restored their initial electrical and optical properties.

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“…The relatively strong interaction between the molecule and substrate causes distortion in the electronic surface of the Pc molecule through charge transfer interaction, leading to the formation of forbidden transitions due to symmetry breaking in the pseudomorphic layers. 42 Variation in bandgap energy has been found with increase in substrate temperature (312-413 K), which may be due to the formation of trapping sites at a higher substrate temperature. 43 Figure 5 shows the PL of ZnPc films at different substrate temperatures.…”

Section: Optical Studiesmentioning

confidence: 98%

Characterization and Dielectric Properties of Vacuum Deposited Zinc Phthalocyanine Thin Film

KaurManjit¹,

KumarRajesh²,

DograRakesh³

et al. 2017

Surface Innovations

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The present paper reports the structural, optical and electrical properties of zinc phthalocyanine (ZnPc) thin films which were grown by the thermal evaporation technique at different substrate temperatures of 312, 363 and 413 K and dielectric response of sandwich geometry of ZnPc thin films have also been studied within frequency range 1 Hz-50 KHz. The crystal structures of these ZnPc films have been characterized using the X-ray diffraction technique. Raman spectra and photoluminescence have been recorded to study the molecular orientations in the ZnPc films for different substrate temperatures. The absorption spectra of the ZnPc films have shown two absorption bands -namely, the Soret band and Q-band. The activation energy values of these films have been determined to be lying in the range of 0·70-0·75 eV. Hole mobility values of ZnPc films have been calculated by using differential susceptance method. The capacitance and dielectric constant have been found to decrease with increase in frequency.

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The effect of growth parameters on the electrical, optical and structural properties of copper phthalocyanine thin films

Cited by 146 publications

References 14 publications

Electrical conductivity studies of mixed phthalocyanine thin films

Electrical conductivity studies of mixed phthalocyanine thin films

Effect of γ-radiation on the conduction mechanism of thermal vacuum deposited copper phthalocyanine thin films

Characterization and Dielectric Properties of Vacuum Deposited Zinc Phthalocyanine Thin Film

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