【摘要】 本文叙述了用铅的硫、硒、碲化合物着色的玻璃系列。该类玻璃能吸收全部可见光,对于在0.7～2.5μm的近红外区域的各种波长具有陡峭上升的透过性能。 我们观察到若干半导体在玻璃中的禁带宽度很接近于晶体的禁带宽度,玻璃的前截止吸收位置决定于电子从价带跃迁到导带所需的能量。我们通过把PbX半导体引入玻璃作出了在近红外区不同波长处具有陡峭前截止边缘的玻璃。 在热处理过程中,玻璃中铅和镉的硫、硒、碲化合物将形成连续固溶体,其禁带宽度决定于聚集物的各种组成,正象在混合晶体中一样。更多还原

【Abstract】 This paper describes a series of glasses colored by lead compounds of S, Se, Te.Theseglasse can absorb the entire visible spectrum and show steep rise in transmission atwave lengths of 0.7～2.5μm in the near infrared region. It is observed that the forbidden band gaps of some semiconductors in glass are closeto those of corresponding crystals, and the location of frontage absorption of glass isdetermined by the energy required for the transition of electrons from valence band toconduction band. Glasses with steep frontage at various wave lengthes in the near infraredregion are obtained by introducing PbX semiconductors into the glasses. During the process of heat treatment,the lead and cadmium chalcogenides in the glassform continuous solid solutions of which the forbidden band gaps are determined by com-positions of the aggregations just as in mixed crystals.更多还原