非晶硅碳薄膜发光二极管发光的热致猝灭

本文详细测试了用RF-PECVD法制备的非晶硅碳薄膜发光二极管的光强电流特性和温度对器件发光强度的影响.在直流电流驱动下,器件的发光在注入电流1A/cm2左右趋于饱和,而在低占空比的脉冲电流驱动下器件的发光直至注入电流20A/cm2仍随电流近似线性增长,但提高环境温度发光随之下降.结合对器件受热情况分析表明,热致猝灭而非场致猝灭导致了器件在大电流下的发光饱和,并简要提出了改进器件散热的措施.     

硅一体化薄膜微电极器件及其应用

提出用发展中的硅微机械加工技术设计制作硅一体化薄膜微电极器件．这类微电化学器件具有微电极所特有的全部优点，而且由于结构上的一体化，便于器件整体的微型化和集成化．试用薄膜微电极器件电流法常温直接检测ＣＯ２气体，取得了满意的结果。设想通过器件三维构型设计的改进和完善，器件工作的长期稳定性可望进一步提高．     

玉帘的组织和原生质体培养

玉帘不同外植体培养，诱导出胚性、中间型和非胚性３种类型的愈伤组织，并再生植株．由胚性愈伤组织与叶肉细胞分离出原生质体，进行培养，启动了细胞分裂并形成了多细胞团．同时，还研究了影响玉帘组织培养以及原生质体分离和培养的诸因素．     

A．G．滤环上Holonomic模特征簇的刻划

给出了Ａ．Ｇ．滤环上ｈｏｌｏｎｏｍｉｃ模的特征簇刻划，推广了微分算子环和Ａ．Ｒ．滤环中的相应结果．     

塔里木河干流区地方性氟病区水化学成分的多元分析

本文运用相关分析、回归分析及Ｒ－型系统聚类分析等方法，研究了里木河干流地区的地方性氟中毒病区内，氟斑牙患病率与饮用水中氟元素及其它化学成分的定量关系，并建立了生活饮用水中氟元素与其它化学成分的回归计算模型，提示了区域内氟斑牙治病的主导因素以及水体中各化学成分和化学性质指标间的相互关系，为探求饮用水型地方性氟中毒的病因提供了科学依据。     

Laser induced fluorescence of CdHg excimer

The fluorescence of CdHg excimer has been observed over the spectral range 220-320 nm for temperature between 660-820K. The spectra were excited in a Cd-Hg mixture contained in a quartz vapor cell by laser pulses at 326.1nm. The peaks of these bands are at about 232, 256 and 286 nm respectively. An interpretation has been given out according to the potential-energy curves.     

Miniature InGaAsP/InP phase modulator for integrated opto-electronics

Miniature, etching ridge InGaAsP/InP Phase Modulator with highly efficient phase shifting efficiency of 60°/V.mm and 43°/V.mm for TE and TM modes, respectively, and 3 dB bandwidth of 650 MHz at 1.52 μm are reported. It is well suited for integrated opto-electronics. Some functions depending on bandwidth of the devices are discussed.     

Superconductivity at 27 K in Nb-1222 cuprate: NbSr2(GdCe)2Cu2Oy

Samples of NbSr₂Gd_2−xCe_xCu₂O_y have been prepared by solid state reaction. The X-ray powder diffraction patterns show that a single phase can be formed in the composition range of 0.49<x<0.51 that has TaSr₂ (NdCe)₂Cu₂O_y structure [1], the cell parameters being a=3.8669±0.0046 Å and c=28.742±0.0048 Å. Superconductivity was found by resistance measurements in the sample of NbSr₂Gd_1.5Ce_0.5Cu₂O_y: the onset transition temperature is 27.4 K, and zero resistance appears at approximately 13 K.