最新刊期
卷 17 ， 期 3 ， 1996
- 摘要：his paper made a unified design of ACTFEL matrix display panels.For the purpose of realizing stable driving, high brightness and effective addressing.The optimium thickness ratio of SiO2/Ta2O5 double-stacked insolator layers, the thickness of ZnS:Mn active layers and the time constant of the matrix display panels were calculated.The measured results of the electrical properties of SiO2/Ta2O5 insolator layers and the ACTFEL devices are in good agreement with the theoretical predictions.Under the guidance of theoretical design, a 640×480 computer terminal display with 10 inch in diagonal, was fabricated.The parameters of it are in accordance with the theoretical calculation.关键词：thin film;electroluminescence;matrix display102|74|2更新时间：2020-08-11
- 摘要：hase relaxation processes of one-dimension Frenkel excitons in organic nanostructure PIC-I and azaPIC-I mixed aggregates were investigated using heterodyne-detected accumulated photon echoes with double modulations(chopper and standing wave modulator).It was observed that the dephasing time T2 of excitons lengthened from 60 ps to 224 ps with increasing the mol of azaPIC-I.It is contrary to shortening of the dephasing time T2 of excitons in mixed aggregates with increasing traps.The results were discussed and analyzed under different excitation conditions of pulse duration 4 ps and correlation time 1 ps.关键词：organic nanostructure material;mixed molecular aggregate;dephasing of Frenkel exciton;accumulated photon echo94|56|0更新时间：2020-08-11
- 摘要：his paper reports carrier transitions and recombinations of ZnS-ZnTe strained layer superlattices (SLSs) at room temperature (RT).The SLSs were grown on BaF2 (111)substrates by metal organic chemical vapour deposition (MOCVD) at atmospheric pressure.By measuring photoluminescence at RT, processes of carrier transition on superlattice subbands were studied.关键词：ZnS-ZnTe;superlattice of type Ⅱ;photoluminescence;band-to-band transition122|107|0更新时间：2020-08-11
- 摘要：he two peaks of PL spectrum of Zn0.67Cd0.33Te/ZnTe superlattices are observed at 77 K and contributed to exciton related and free-to-bound radiative recombination transition, respectively.In order to get further information about the characterization of this sample, experiments of PL under different temperature have been developed.The activation energy of the two peaks in high temperature region has been obtained to be 127 meV and 132 meV, respectively.关键词：superlattices;near band edge photoluminescence;activation energy111|89|2更新时间：2020-08-11
- 摘要：The absorption and emission spectra of Cr:YAG, Tm:YAG and Cr, Tm:YAG crystals have been measured.The energy transfer processes from Cr3+ to Tm3+ in Cr, Tin:YAG crystal have been studied.The results show that the Cr3+→Tm3+ energy transfer is mainly finished by non-radiative process.关键词：Cr;Tm:YAG;energy transfer109|85|1更新时间：2020-08-11
- 摘要：The spectroscopic preporties and fluorescence decay from Cr3+ ions in Cd3Al2Ge3O12 germanate garnets at 295 K and 77 K have been investigated for the first time.In Cd3Al2Ge3O12 garnet Cr3+ ions replaced A13+ ions occupy at octahedral sites with an intermediate crystal field.It was found that the fluorescence spectra of Cr3+ in this garnet consist of the broad emission band from 15400 cm-1 extending to about 11400 cm-1, two series of R lines and the weaker vibronic spectrum.At room temperature Cr3+ ions give the strong broad band emission, weaker R lines and vibronic spectrum of R lines, but at 77 K R lines dominate and the broad band decreases considerably.Analysing Cr3+ spectral results of the germanate garnet indicates that there are two Cr3+ emission centres to lead the complex emission spectra.The room temperature lifetimes of Cr3+ broad band emission are from about 570 μs to 300 μs as a function of Cr3+ concentration.关键词：broad band emission;R line;vibronic spectrum of R line;Cr3+ ion;germanate garnet135|69|2更新时间：2020-08-11
- 摘要：A systamatic study of the effect of the microstructure on the luminescence of ZnS:Tb, F thin film was carried out using X-ray diffraction and CL techniques.The Tb3+ emission intensity depends strongly on the substrate temperature and the annealing temperature, which also affects the crystallinity of the thin film.In addition, the effect of the gain size in the films and the type of valent charge states of rare earth ions on luminescence of polycrystalline thin film was also discussed.关键词：ZnS:Tb;F thin film;microstructure;luminescence84|68|4更新时间：2020-08-11
- 摘要：This paper discussed the dependence of the electrical properties of SiNx film grown by PECVD upon the growth conditions.This film overcame stress peeling and catastrophic failures problems in sputtered SiNx film.It is experimently indicated that this dielectric film is satisfied to application on TFEL panels.关键词：PECVD;SiNx;film;dielectric properties95|125|0更新时间：2020-08-11
- 摘要：The title coordination compound Eu (o-MBA)3phen (o-MBA:o-methylbenzoate, phen:1, 10-phenanthroline) fluoresces very intensely under ultraviolet or visible light.The high-resolution excitation and luminescence spectra were measured at 77 K.5D0→7F2 luminescence spectra of two different sites have been obtained by the selectively excited 5D0 levels of the complex which indicates that Eu(Ⅲ) ions in the complex have two unequally chemical environments.Bands of antisymmetric and symmetric streching vibrations in the carboxylate anion are significantly split and broad in the Raman spectrum of the complex, which show more than one coordination modes for the carboxylate group in the complex.This is in agreement with crystal structure determination of the complex.关键词：europium complex;luminescence spectrum;Raman spectrum119|54|2更新时间：2020-08-11
- 摘要：Fluorescence spectra of Tb3+-chelate and HSA labelled with Tb3+-chelate were investigated.The lifetimes of the chelate and the label were measured.It is suggested that the exist of HSA has no influence on Tb3+ luminescence in HSA labelled with Tb3+-chelate.The competitive fluoroimmunoassay for determination of HSA in aqueous solution was established.关键词：terbium;label;fluorescence;fluoroimmunoassay;chelate141|80|0更新时间：2020-08-11
- 摘要：A new chemiluminescence analytical system of xanthine oxidase-acetaldehyde-Acridinium was studied.This system is based on the quantitative oxidation of acetaldehyde by xanthine oxidase to form acetic acid and hydrogen peroxide.The hydrogen peroxide produced is then measured by a new acridinium ester [10-methyl-9-(p-formylphenyl)acridinium carboxylate fluorosulphonate]CL system.In addition, the effect of other substances on the test was investigated.The appropriate conditions for the ezymatic reaction and the chemiluminescent reaction were studied.In addition, the effect of other substances on the acetaldehyde determination was also investigated.The graph was linear over three orders of magnitude between 2.6×10-7 and 1.2×10-3mol/L and the relative standard deviation (n=10) was 6.8% for a 5.0×10-7mol/L acetaldehyde.The detection limit for acetaldehyde by this method was about one order of magnitude better than those of other chemiluminescence methods; The determination of acetaldehyde in certain polluted water, the results were satisfactory.关键词：xanthine oxidase;acetaldehyde;chemiluminescence analysis;10-Methyl-9(p-formylphenyl)-acridinium carbxylate fluorosulphonate91|94|0更新时间：2020-08-11
- 摘要：Generally, the computer display code buffer memory is served to store the ASC Ⅱ codes of the information which would be appeared on the screen of the computer in cha racier method.And the character generator convert ASC Ⅱ codes which are put out from display code buffer memory to character dot matrice and display them on the appointed location of the screen while the display output is running.In the LEDs display application, the display code buffer memory is essential for us to realize the data transmission, which perform what brings the display information into correspondence with that of the remote subsystem of LEDs display panel simultaneously.While we utilize pc-1500 as the control computer, as its irregular display code buffer memory and the difference of dot matrix between the LEDs panel and control computer screen, so we have some problems in the job.This paper gives a method of Boolean transformation and inverse transformation for us to solve them,and the performance of the new method is very well.关键词：transformation of Boolean Algebra;LEDs display;Hash codes;logical calculation method109|86|1更新时间：2020-08-11
- 摘要：The method of testing semiconductor hetero-epilayer using X-ray wide angle goniometer and double crystal goniometer was introduced.Two difficulties have been surmounted in this method.They are rectifing the orientation deviation of wafer and returning to normal position of θ=0° of wide angle goniometer.With this method satisfactory results were obtained for different kinds of epilayers.This method may be applied to test the lattice mismatch between substrate and epilayer, composition and their variation, detect the perfectness of substrate and epilayer and evaluate the superlattice structure parameter etc.关键词：X-ray test;epilayer142|79|0更新时间：2020-08-11
- 摘要：X-ray diffraction curves of Ⅱ-Ⅵ compound strained-layer superlattice grown by metal organic chemical vapor deposition (MOCVD) were measured by using computercontroled X-ray diffractometer.The multiplicate peaks of the superlattice structure were observed.The intensity of satellite peaks veries periodically with diffraction angles.Analysis and discussion for the X-ray diffraction curves were carried out by using X-ray kinematic diffraction theory.The structure parameters of the samples were calculated with photoluminescence (PL) and the width of envelope peak.关键词：X-ray diffraction;strained-layer superlattice;satellite peak101|108|0更新时间：2020-08-11
- 摘要：It is reported in this paper that Bragg gratings are successfully fabricated on national 202 positive photoresist by excimer laser of 248 urn wavelength through a phase mask.The effect of this UV exposure equipment suitable for fabrication of fiber Bragg grating reflector is demonstrated perfectly.126|73|1更新时间：2020-08-11
- 摘要：At 77 K.stimulated emission from n=1 heavy hole excition under an electric field modulation is observed in a Zn0.85Cd0.15Se-Znse strained layer superlattice grown by atmospheric MOCVD.When an externally applied reverse bias voltage rises to 1.5 V (corresponding to 1.3×104V/cm), the stimulated emission is obviously enhanced in the ratio between lasing and heavy hole exciton luminescence intensities as compared with that at zero bias voltage.The stimulated emission rapidly quench with increasing bias voltage to 1.8 V.135|63|1更新时间：2020-08-11
- 摘要：Abstract Holographic plates of the red sensitive photopolymer (RSP) were exposed by interfering a focal light beam with a parallel light beam.After the plates were developed, dewatered and dried, we fabricated the plates that realized crossover optical interconnections.In the experiment, the diffractive efficiencies of holographic elements were controlled at about 50%.112|89|0更新时间：2020-08-11
- 摘要：t is firstly found that a new Eu3+ complex(HDBM) can be used for organic thin film electroluminescence.It's volatile in vacuum.Its film forming property is very good.A thin film electroluminescence cell with the structure of ITO/TPB/HDBM/Mg/Ag was made.At forward bias,a sharp red monochromatic light was obtained around 614 urn, corresponding to Eu3+ characteristic emition.At forward bias of 20 V, luminance of the cell can reach 90 cd/m2.The light emiting on the surface of the device is homogeneous.102|82|1更新时间：2020-08-11
- 摘要：The methods for calculating the compositional dependence of the energy bandgap for quaternary alloys GaxIn1-xAs1-ySby are discussed in this paper.The linear interpolation method by Moon et al.was applied to calculate the compositional dependence of the energy bandgap for Ⅲ-Ⅴ quaternary alloys.In addition, littejohn gave another method, which was partly different from that reported by Moon et al.According to the two method, we calculated the energy bandgap as a function of the compositions for quaternary alloys GaxIn1-xAs1-ySby.Comparing the calculated values with the experimental ones, we found that the linear interpolation method is better to calculate the energy bnadgap of GaxIn1-xAs1-ySby quaternary alloys.97|50|0更新时间：2020-08-11
- 摘要：As computer and optical communication technology make progress, display devices to replace CRTs also are showing fast progress.Light-emmitting diode (LED) displays are among those display devices, and they have widely applied.This paper introduces a new method, which makes hardware to simplify, low cost and software programming easy.90|100|0更新时间：2020-08-11
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