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Optical and electrical properties of AlAl2O3Cu tunnel junctions
Abstracts
the SPS increases with increasing film thickness. When the film thickness is bigger than this thickness, the SPS decreases with the increasing thickness. We think that LB films of PVK can be used as high efficiency super thin organic cell.
Ionization potential effect on CGL/CTL photoconductors
temperature was higher than 450°C, the influence of silicon substrate on the resistance temperature dependence of diamond film was more obvious. The authors tested preparation of the thermistor mode of a polycrystal diamond film on silicon substrate. Good characteristic was obtained at a temperature up to 400°C. Surface state, electrode design and leads were all important factors which should be considered. More experiments are now being made.
Shi Xiaodong, Shanghai Electric Cable Research Institute,
Shanghai 200093, China Double layered organic photoreceptors are now more and more conspicuous for electophotographic applications. This kind of photoreceptor is composed of a carrier generation layer (CGL) and a carrier transport layer (CTL). Using e-form copper phthalocyanine as C G L material, this paper presents photoconductive data of several p-type CTL material-oxazoles, and ~jves brief discussion concerning their ionization potential Ip and photo sensitivities. Ip values are obtained from quantum quantitative calculation and the polarographic oxidation potent:ial. The photoreceptors use oxazoles as CTL materials, and show high sensitivities. A simple correlation is obtained between the Ip values of the CTL materials and the photosensit:ivities though the result cannot be explained very clearly.
Optical and electrical properties of AI-AI203-Cu tunnel junctions Q Q Shu, X M Tian, X Y Chen and C Z Cai, Department of Applied
Physics, Chongqing University, Chongqing, Sichuan 630044, China Comparison of A1-A1203-Au tunnel junctions, light emission c,utput and I-V characteristics with A1-AI203--Cu tunnel junct~ions have been studied. The junctions with the Cu film of 500 A. can be biased up to 2.9 V at room temperature, and the light emission efficiencies were in the range of 10 6. The I-V curves have been measured at 77 K. Based on the dispersion curves of surface plasmon polariton at the interfaces of the junctions, the trapezoidal barrier parameters and the AES depth profile analysis of the junctions are given, and the results are discussed.
]'he temperature dependence of the resistance of diamond film synthesized by microwave plasma chemical vapour deposition method Yang Bangchao, Gou Li and Jia Yuming, University of Electronic
Science and Technology of Chengdu, Chengdu 610054, China Dense diamond films were deposited on a silicon substrate by the microwave CVD method. At room temperature, their resistance values were laid between 10 9 and 1012 [). The resistance temperature dependence was measured in the temperature range from RT to 600°C. Two kinds of electrodes--surface and upperlower--were used. The electrode structure was multi-layer film type and the leads were attached to the electrodes with fired silver paste. Good linearity of resistance was acquired when the temperature was below 450°C. The difference between two kinds of electrode was essentially the effect of surface state, which affected the stability of resistance in the measurement when the
Optical and anti-mould properties of diamond-like carbon films Wang Hezhao, Department of Applied Physics, Hefei University of Technology, Hefei 230009, China; and Luo Dongmiao and Li
Lei, Beijing Optical Instrument Factory, Tong Xian, Beijing, China Diamond-like carbon films (DLC) were prepared by the glow discharge technique as described elsewhere. This paper reports the optical properties of the films, the test results of mould growth for DLC and the films' adhesive force etc. The films' optical gap and refractive index range from 1.85 to 2.86 and 1.20 to 1.86 for our preparation conditions. The transmittance of DLC films is more than 97% at 400-900 nm range. The mould growth was tested for DLC samples which had been left under natural conditions for more than 2 yr. The mould growth experiment was done according to GB2423, 16-81J. The chief experimental growth of mould covering an area of < 25%, and the observation is invisible to the naked eye. However, under 50 x magnification obvious moulds are observed and they are clear to the naked eye, covering an area of <25%. Under 50 x magnification no mould is found for three pieces, but it is clear for one piece. Under 50 x magnification there is not any mould. The film adherence force is a key factor in application. We measured the film adherence force. The pulling force Fv of the vertical film plane is more than 0.5 kg, which is the adherence force between the adhesive-tape and DLC film. The pulling force Fp of parallel film plane is more than 8 kg, which is the limitation of the adhesive-tape strength. The faces of film samples are still very good after the above-mentioned experiment. Besides, the following experiments have been made by aerostandard. They are the drop anti-corrosion experiment, the porosity experiment and the experiment of resisting damp and heat, of resisting organic-atmosphere. All results are satisfactory. To summarize, the DLC films are obviously valuable in application for surface costing of such optical cells as the optical lens and the solar battery.
Optical emission spectroscopy in diamond-like carbon film deposition Zhang Weiping and Chen Jing, Department of Physics, University
of Science and Technology of China, Hefei 230026, China It is very important to know the dynamical properties of the thin film deposition process. Optical emission spectroscopy (OES) can provide information on the excited species in a plasma chemical 1083
the SPS increases with increasing film thickness. When the film thickness is bigger than this thickness, the SPS decreases with the increasing thickness. We think that LB films of PVK can be used as high efficiency super thin organic cell.
Ionization potential effect on CGL/CTL photoconductors
temperature was higher than 450°C, the influence of silicon substrate on the resistance temperature dependence of diamond film was more obvious. The authors tested preparation of the thermistor mode of a polycrystal diamond film on silicon substrate. Good characteristic was obtained at a temperature up to 400°C. Surface state, electrode design and leads were all important factors which should be considered. More experiments are now being made.
Shi Xiaodong, Shanghai Electric Cable Research Institute,
Shanghai 200093, China Double layered organic photoreceptors are now more and more conspicuous for electophotographic applications. This kind of photoreceptor is composed of a carrier generation layer (CGL) and a carrier transport layer (CTL). Using e-form copper phthalocyanine as C G L material, this paper presents photoconductive data of several p-type CTL material-oxazoles, and ~jves brief discussion concerning their ionization potential Ip and photo sensitivities. Ip values are obtained from quantum quantitative calculation and the polarographic oxidation potent:ial. The photoreceptors use oxazoles as CTL materials, and show high sensitivities. A simple correlation is obtained between the Ip values of the CTL materials and the photosensit:ivities though the result cannot be explained very clearly.
Optical and electrical properties of AI-AI203-Cu tunnel junctions Q Q Shu, X M Tian, X Y Chen and C Z Cai, Department of Applied
Physics, Chongqing University, Chongqing, Sichuan 630044, China Comparison of A1-A1203-Au tunnel junctions, light emission c,utput and I-V characteristics with A1-AI203--Cu tunnel junct~ions have been studied. The junctions with the Cu film of 500 A. can be biased up to 2.9 V at room temperature, and the light emission efficiencies were in the range of 10 6. The I-V curves have been measured at 77 K. Based on the dispersion curves of surface plasmon polariton at the interfaces of the junctions, the trapezoidal barrier parameters and the AES depth profile analysis of the junctions are given, and the results are discussed.
]'he temperature dependence of the resistance of diamond film synthesized by microwave plasma chemical vapour deposition method Yang Bangchao, Gou Li and Jia Yuming, University of Electronic
Science and Technology of Chengdu, Chengdu 610054, China Dense diamond films were deposited on a silicon substrate by the microwave CVD method. At room temperature, their resistance values were laid between 10 9 and 1012 [). The resistance temperature dependence was measured in the temperature range from RT to 600°C. Two kinds of electrodes--surface and upperlower--were used. The electrode structure was multi-layer film type and the leads were attached to the electrodes with fired silver paste. Good linearity of resistance was acquired when the temperature was below 450°C. The difference between two kinds of electrode was essentially the effect of surface state, which affected the stability of resistance in the measurement when the
Optical and anti-mould properties of diamond-like carbon films Wang Hezhao, Department of Applied Physics, Hefei University of Technology, Hefei 230009, China; and Luo Dongmiao and Li
Lei, Beijing Optical Instrument Factory, Tong Xian, Beijing, China Diamond-like carbon films (DLC) were prepared by the glow discharge technique as described elsewhere. This paper reports the optical properties of the films, the test results of mould growth for DLC and the films' adhesive force etc. The films' optical gap and refractive index range from 1.85 to 2.86 and 1.20 to 1.86 for our preparation conditions. The transmittance of DLC films is more than 97% at 400-900 nm range. The mould growth was tested for DLC samples which had been left under natural conditions for more than 2 yr. The mould growth experiment was done according to GB2423, 16-81J. The chief experimental growth of mould covering an area of < 25%, and the observation is invisible to the naked eye. However, under 50 x magnification obvious moulds are observed and they are clear to the naked eye, covering an area of <25%. Under 50 x magnification no mould is found for three pieces, but it is clear for one piece. Under 50 x magnification there is not any mould. The film adherence force is a key factor in application. We measured the film adherence force. The pulling force Fv of the vertical film plane is more than 0.5 kg, which is the adherence force between the adhesive-tape and DLC film. The pulling force Fp of parallel film plane is more than 8 kg, which is the limitation of the adhesive-tape strength. The faces of film samples are still very good after the above-mentioned experiment. Besides, the following experiments have been made by aerostandard. They are the drop anti-corrosion experiment, the porosity experiment and the experiment of resisting damp and heat, of resisting organic-atmosphere. All results are satisfactory. To summarize, the DLC films are obviously valuable in application for surface costing of such optical cells as the optical lens and the solar battery.
Optical emission spectroscopy in diamond-like carbon film deposition Zhang Weiping and Chen Jing, Department of Physics, University
of Science and Technology of China, Hefei 230026, China It is very important to know the dynamical properties of the thin film deposition process. Optical emission spectroscopy (OES) can provide information on the excited species in a plasma chemical 1083