HI—V族化合物半导体的高能重离子辐照缺陷研究·

用正电子湮没寿命谱技术研究了2.4×1O15/cm2、2.2×1016/cm2注量的85MeV19F离子辐照N型GaP和1.6×1016/cm 2注量的85MeV19F离子辐照P型InP所产生的辐照缺陷.结果表明:两种注量辐照在GaP中均产生较高浓度的单空位.其浓度随着辐照注量的增大而增加;辐照也在InP中产生较高浓度的单空位.     

求解一类非单调线性互补问题的宽邻域内点方法及其计算复杂性

对于一类非单调线性互补问题给出了一种新的算法——宽邻域内点算法，并讨论了其计算复杂性。     

一种有机电致发光共聚物的制备和性能

采用Suzuki方法合成了9，9-二辛基芴与萘并硒二唑的两种无规共聚物并研究了其紫外光谱、光致发光和电致发光性能。两种聚合物的电致发光波长为650～666nm，均为发饱和红光的LED材料，其电致发光外量子效率最高达到了1．05％。随着共聚物中萘并硒二唑含量的增加，共聚物的光致发光和电致发光的发射波长均有少量红移。证明了根据共轭高聚物链内能量转移原理，在聚芴链中引入不同含量的窄带隙杂环单元可实现对聚芴发光颜色的调节。     

Regioselective Synthesis of Multi-substituted Phenylselenomethyl Isoxazolines

A mild, regioselective 1, 3-dipolar cycloaddition protocol for the preparation ofphenylselenomethyl isoxazolines through substituted allyl phenyl selenides and nitrile oxides wasreported.     

One-pot Synthesis of 2, 5-Disubstituted Oxazoles Using Poly[styrene（iodosodiacetate）]

2,5-Disubstituted oxazoles were prepared conveniently by treatment of aromatic α-methyl ketones and nitriles with poly[styrene(iodosodiacetate)] in one-pot process.     

Compression Behaviour of Ni77P23 Amorphous Alloy up to 30.5 GPa

The compression behaviour of Ni77P23 amorphous alloy is investigated at room temperature in a diamond-anvil cell instrument using in-situ high pressure energy dispersive x-ray diffraction with a synchrotron radiation source. The equation of state is determined by fitting the experimental data according to the Birch-Murnaghan equation. It is found that the structure of Ni77P23 amorphous alloy is stable under pressures up to 30.5 GPa. Within the pressure range from zero to the experimental one, the pressure-induced structural relaxation is reversible.     

Gd_xY_（1－x）P_5O_（14）：Ce，Tb的发光和能量传递Ⅱ．Ce→

研究了Ｇｄ＿ｘＹ＿（１－ｘ）Ｐ＿５Ｏ＿（１４）：Ｃｅ＿（０．０１），Ｔｂ＿（０．０２）体系中Ｇｄ的子晶格在Ｃｅ→Ｇｄ→Ｔｂ能量传递中的中介作用规律及ＧｄＰ＿５Ｏ＿（１４），ＧｄＰ＿５Ｏ＿（１４）：Ｃｅ，ＧｄＰ＿５Ｏ＿（１４）：Ｔｂ和Ｇｄ＿ｘＹ＿（１－ｘ）Ｐ＿５Ｏ＿（１４）：Ｃｅ，Ｔｂ的荧光光谱、激发光谱。结果表明，当ｘ＞０．７时，结构从单斜Ⅱ（Ｃ２／ｃ）的层状结构变为单斜Ｉ（Ｐ２＿１／ｃ）的带状结构，Ｃｅ￣（３＋）的发射光谱和Ｇｄ￣（３＋）的吸收光谱交迭增加等是Ｃｅ￣（３＋）→Ｇｄ￣（３＋）→Ｔｂ￣（３＋）能量传递几率增加的主要原因。     

牛顿弦截法预估校正迭代格式的收敛阶

研究如下形式的牛顿弦截法的预估校正(P.C.)格式:P(预估):~xk+1=xk-(xk-xk-1)f(xk)f(xk)-f(xk-1)C(校正):xk+1=xk-(~xk+1-xk)f(xk)f~(xk+1)-f(xk)证明了它的收敛阶为2.618.