Photoinduced Surface Deposition Phenomenon of Chalcogenide Amorphous Films Containing a large Amount of Silver (Studies of Nucleation and Growth Process)

获得了1999 ~ 2000年2年的成核和生长过程的基本数据。实验所用样品为Ag_xAs_<15>S_<40-x>（35 &lt;$x &lt;$45）系统的块体玻璃和Ag_x（Ge_<0.3>S_<0.7>）_<100-x>（55 &lt;$x &lt;$67）系统的薄膜。低Ag含量的块体玻璃显示出少量的偏析Ag，但高密度的Ag颗粒。相反，具有高Ag浓度的块体玻璃显示出大量的偏析的Ag，但具有大尺寸的小密度的Ag颗粒。另一方面，具有低Ag浓度的膜样品显示少量的Ag偏析，并且具有大Ag浓度的样品显示大量的Ag偏析。Ag颗粒的数量不显著依赖于Ag浓度。Ag浓度影响Ag颗粒的尺寸。实际上，当Ag浓度较高时（x=65 × 67），照射区被Ag沉积物密集覆盖，就像一个连续的Ag膜。 ...更多信息 S被发现是有效的，以增加银颗粒的数量。添加少量的Au金属对Ag-As-S块体玻璃是非常有效的。Au^+离子的注入对Ag-As-S块体玻璃也是有效的。发现在光学照射之前的电子束照射产生高密度的Ag核。在2001年，我们研究了体玻璃和薄膜样品晶体生长机制的差异。晶体生长强烈依赖于Ag浓度，而与玻璃体和薄膜样品无关。综上所述，可以提出以下模型用于光诱导表面沉积现象中Ag颗粒的成核和生长过程。样品表面上的一些成核位点可以帮助Ag沉积。在块体玻璃的情况下，在低Ag浓度下，位置的数量是大的，并且随着Ag浓度的增加而减小。这似乎是由于玻璃结构造成的。对于薄膜样品，该位置可能与薄膜的表面粗糙度和结构有关，因为在具有高Ag浓度的薄膜样品中出现许多Ag颗粒。膜的表面粗糙度和结构都可以大于块状玻璃。添加Au金属可在玻璃和膜中产生Au簇，并且Au簇可充当Ag沉积工艺的成核中心。Au团簇的影响对块体玻璃比对薄膜样品更显著，块体玻璃的初始位数比薄膜样品少得多。少

The Basic data of the nucleation and growth process were obtained for 2 years from 1999 to 2000. The samples used in this experiment were the bulk glasses in the system of Ag_xAs_<15>S_<40-x> (35≦x≦45) and the films in the system of Ag_x(Ge_<0.3>S_<0.7>)_<100-x> (55≦x≦67). The bulk glass with low Ag concentration shows small amount of segregated Ag but high density Ag particles. In contrast, the bulk glass with high Ag concentration shows large amount of segregated Ag but small density Ag particles with large size. On the other hand, the film samples with low Ag concentration shows small amount of segregated Ag and the samples with large Ag concentration shows large amount of segregated Ag. The number of Ag particles does not depend significantly on the Ag concentration. The Ag concentration affects the size of Ag particles. In fact, the illuminated area is densely covered with Ag deposits for high Ag concentration (x=65〜67), as if a continuous Ag film.The addition of nucleus former wa … More s found to be effective to increase the number of Ag particles. The addition of a small amount of Au metal is highly effective for the Ag-As-S bulk glasses. The implantation of Au^+ ions was also effective for the Ag-As-S bulk glasses. The electron beam irradiation before optical illumination was found to create high density Ag nucleus. In 2001, we have researched difference of the crystal growth mechanism between the bulk glasses and film samples. The crystal growth depends strongly depends on the Ag concentration, irrespective of the bulk glass and film sample.In summary, the following model may be proposed for the nucleation and growth process of Ag particles in the Photoinduced surface deposition phenomenon. Some nucleation site on the sample surface may assist the Ag deposition. In the case of bulk glasses, the number of sits is large for low Ag concentration and decreases with increasing the Ag concentration. This seems to be due to the glass structure. For the film sample, the site may be concerned with both surface roughness and structure of the films, since many Ag particles appear for the film samples with high Ag concentration. Both surface roughness and structure for the films may be large than for the bulk glasses. The addition of Au metal may produce the Au clusters in the glass and film and the Au cluster may act as a nucleation center of the Ag deposition process. The effect of Au cluster is significant for the bulk glass than for the film sample, the number of original site of the bulk glass is much less than the film sample. Less