共查询到20条相似文献,搜索用时 62 毫秒
1.
介绍了聚光光伏系统的发展历史和研究现状。对聚光光伏系统中的主件一聚光器和光伏电池进行了详细分类,给出了它们的特点和主要参数。描述了国外一些厂家为提高光伏系统效率并降低成本而研制的太阳跟踪系统。总结出聚光光伏系统的发展趋势,主要是指高倍聚光器+跟踪系统和低倍大角度聚光器+分光元件+多节电池等。最后就目前状况提出了聚光光伏系统商业化还需要解决的问题。 相似文献
2.
3.
4.
5.
6.
7.
分别用数值法和微扰法研究了考虑背景光时光伏暗空间孤子的自偏转特性.与亮孤子不同,暗孤子光束中心的运动轨迹不为抛物线.在归一化的直角坐标系(ξ,ζ)中,暗孤子朝ξ>0的方向偏转;同时,暗孤子光束中心光强发生改变.通过调节晶体对信号光和背景光的有效光伏系数之比r或信号光光强可以控制它的自偏转.还用数值方法研究了灰空间孤子的自偏转特性,发现灰孤子光束自偏转特性依赖于横向初速度v.当v>0时,灰孤子光束朝ξ>0的方向
关键词:
光伏空间暗孤子
光伏空间灰孤子
扩散效应
自偏转 相似文献
8.
9.
10.
本文以4,4′,4′′-三[3-甲基苯基苯胺基)三苯胺(m-MTDATA)为电子给体,Re(CO)3Cl-dipyrido [3,2-a:2',3'-c]phenazine (Re-DPPz)为电子受体制成有机光伏器件。在紫外灯(365 nm, 1.6 mW/cm2)从ITO方向垂直照射下,器件的短路电流(Isc), 开路电压 (Voc), 填充因子(FF),功率转换效率分别为57.1 μA/cm2, 0.86 V, 0.39, 1.2%。研究结果表明有机磷光发光材料Re-DPPz也具有良好的光伏性能。 相似文献
11.
12.
The lowest absorption band of the tetraphenyl compounds resembles that of the lowest absorption band of benzene with the following difference. In benzene the electronic origin is strictly forbidden, and all intensity is associated with a symmetric progression built on one mode of asymmetric vibration. In the tetraphenyl compounds the intensity associated with the asymmetric vibration is relatively unaffected; however, there is increasing intensity associated with the electronic origin and a symmetric progression built on it along the series . For the cations it is the electronic origin and the progression built on it that are the primary source of intensity. This effect is attributed to an inductive perturbation. A similar effect is observed in the fluorescence spectrum. In phosphorescence, the relative enhancement of the electronic origin and the progression built on it is far less marked. The phosphorescence emission of φ4Pb and φ4Sb+ are red shifted from the others by ~0.5 eV, an effect attributed to formation of a triplet excimer. Increasing spin-orbit coupling in the triplet due to a heavy atom effect can be seen in the decreasing phosphorescence lifetime (range 4 sec to 4 msec) and decreasing ratio of (fluorescence to phosphorescence quantum yields) in the order In all cases nonexponential decay of phosphorescence is observed. 相似文献
13.
ICP-AES法测定金属硅中的Al、B、Ba、Ca、Cr、Cu、 Fe、Mg、Mn、Ni、Sr、Ti、V和Zn杂质元素 总被引:13,自引:0,他引:13
本文提供了一种测定金属硅中B,Fe,Al,Ca,Mn等14个杂质元素的ICP-AES方法,在样品处理过程中,加入适量体积的甘露醇能够抑制B的挥发。用本方法测定了一个国家地球化学标准样(GSR-4),结果令人满意。 相似文献
14.
15.
Ö. Söğüt E. Baydaş E. Büyükkasap A. Küçükönder Y. Şahin 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2003,22(1):13-16
K shell X-ray production cross-sections in the Ti, V, Cr, Mn, Fe, Co, Ni, and Cu in the molecules were studied at 59.5 keV
excitation energy by using a Si(Li) detector ( FWHM = 155 eV at 5.96 keV). The present results are compared with other theoretical values. 相似文献
16.
纯硒中杂质元素的ICP-AES测定 总被引:1,自引:0,他引:1
电感耦合等离子体-原子发射光谱同时测定纯硒中的碲、铅、铋、锑、铜、铁、镍、铝、锡、砷和硼12种元素的含量,优化出各元素的分析波长和分析条件;用基体匹配补偿基体效应,方法简单,快速可靠,样品回收率为94%-107%. 相似文献
17.
18.
Hugo O. Mosca 《Surface science》2007,601(15):3224-3232
The surface energy for different surface orientations of the solid solutions as a function of concentration formed by Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W is computed and analyzed using the BFS method for alloys. Similarities and differences among the different binary alloys are examined in terms of strain and chemical effects. 相似文献
19.
Semiempirical equations of state are obtained for copper, silver, gold, lead, nickel, and aluminum, which permit a study of the mechanical properties of the crystalline lattices of these metals when subjected to a complex system of stresses over the entire elastic deformation region, and lead to an evaluation of the mechanical destruction parameters of these lattices. As an example, the case of omnidirectional tension is examined.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 66–70, January, 1973. 相似文献
20.
ICP—AES法直接测定锡锭中的As,A1,Bi,Cd,Cu,Fe,Pb,Se,Sb,Zn 总被引:4,自引:0,他引:4
以电荷耦合器件为检测器的全谱直读等离子体光谱仪直接测定锡锭中As、A1、Bi、Cd、Cu、Fed、Pb、Se、Sb、Zn十种杂质元素的含量。该方法简便、快速且具有比化学法更低的检出限,加标回收试验结果不明,回收率为92%-105%,RSD均小于1.5%。 相似文献