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硫族化物

朱砂名称是硫化汞,是一种常用作颜料的硫族化物

硫族化物硫属化物chalcogenide)是指至少含有一个硫族元素(氧族元素中除了氧以外的元素)离子及一个电负性较小元素的化合物。一般硫族元素是指𫟷等元素,而电负性较小元素一般是指等元素。

静电复印术英语xerography电视中都有用到具有光电导性硫族化物玻璃英语chalcogenide glass

雪梨大学开发了用硫族化物作为光侦测器的光学处理芯片,可能可以提升光纤网络和电脑之间的传输速度[1]

许多以离子键键结的硫族化物(例如硫化铁硫化镉)存在含硫的矿石中,也常作为颜料使用,例如朱砂(硫化汞)、镉黄(硫化镉)、镉红(硒化镉)及可用作白色颜料的硫化锌

硫族化物常温下为气体或固体,若是固体,一般会以离子键或共价键的方式键结。硫族化物一般会形成晶体,但也可以形成无定形体玻璃状结构。

应用

硫族化物由于其无定形体的特性.可以用在以下的应用中:

  • 波长在1至14微米的红外线有穿透性的光学玻璃(Ge33As12Se55、Se32Te25Ge30As13、As40Ge10Se50、Se60Ge28Sb12、Se60As40)。
  • 可多次写入光学储存媒体(如CD-RWDVD-RAM)的涂层,主要是利用硫族化物在二个相态(晶体及无定形体)下光学性质的差异,且在施加激光的条件下,化合物可以在二个相态之间切换(参考相变技术德语Phase-Change-Technologie)。
  • 相变化内存中的电阻性物质,相变化内存是一种新型的非挥发性内存,主要是利用硫族化物在二个相态(晶体及无定形体)下电阻的差异,且在施加电流的条件下,化合物可以在二个相态之间切换的特性。
  • 半导体器件制造中的光刻所用的光刻胶

举例

参照

外部链接

参考资料

  1. ^ * Chip may speed up internet 100 times页面存档备份,存于互联网档案馆) Deborah Smith for Sydney Morning Herald July 10, 2008


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硫族化物
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