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    • 1. 发明公开
    • Optoelectronic devices
    • Optoelektronische Vorrichtungen。
    • EP0433542A2
    • 1991-06-26
    • EP90114315.6
    • 1990-07-26
    • International Business Machines Corporation
    • Esaki, LeoOhno, HideoMendez, Emilio Eugenio
    • H01L33/00H01L31/0352H01S3/19
    • H01L33/06B82Y20/00H01L31/0352H01S5/06203H01S5/06206H01S5/34H01S5/3402H01S5/3418H01S5/3419H01S5/3422H01S5/34306
    • The present invention is directed to novel optoelectronic devices, such as light emitters and detectors, that have a unique combination of semiconductor materials that provides a band arrangement resulting in improved efficiency of carrier injection. The devices are quantum well type devices in which discrete electronic states are formed by size quantization effects in the quantum well region. Electromagnetic radiation of emission and absorption occurs by the transition of electrons from a first energy state to a second energy state in either the conduction band or the valence band of the quantum well layer (12). The bands edges of the layers are offset such that under an appropriate bias, the discrete energy states reside in the bandgap of one of the electrodes (14) and in an allowed region of the other electrode (16), with one state residing in the conduction band of one electrode and the other state residing in the valence band of the other electrode. The wavelength of the emitted or detected light is inversely proportional to the energy difference between the first and second states. Wavelength customization is facilitated by techniques for adjusting the energy difference.
    • 本发明涉及新型光电器件,例如发光体和检测器,其具有提供带状布置的半导体材料的独特组合,从而提高载流子注入的效率。 这些器件是量子阱型器件,其中通过量子阱区域中的尺寸量化效应形成分立的电子状态。 发射和吸收的电磁辐射通过电子从量子阱层(12)的导带或价带中的第一能态转变为第二能态而发生。 这些层的带边缘被偏移,使得在适当的偏压下,离散能态驻留在电极(14)之一和另一电极(16)的允许区域的带隙中,一个状态驻留在 一个电极的导带和另一个电极的价带中的另一个状态。 发射或检测到的光的波长与第一和第二状态之间的能量差成反比。 通过调整能量差异的技术来促进波长定制。
    • 10. 发明公开
    • Semiconductor device using holes as charge carriers
    • Halbleiterbauelement mitLöchernalsLadungsträger。
    • EP0202383A1
    • 1986-11-26
    • EP85308997.7
    • 1985-12-11
    • International Business Machines Corporation
    • Esaki, LeoChang, Leroy Li-GongWang, Wen-I
    • H01L29/32H01L29/36H01L29/205H01L29/80
    • H01L29/7783H01L29/205H01L29/432
    • @ Holes are the charge carriers along a conduction channel in an epitaxial layer (28) of semiconductor material (eg GaSb) formed on a supporting layer - (26) of semiconductor material (eg AISb) which has a lower valance-band energy than that of the material of the epitaxial layer. The material of the epitaxial layer (28) has a lattice spacing when unstrained which is different from the lattice spacing of the material of the supporting layer (26) which is rigid enough to strain the lattice of the material of the epitaxial layer. The material of the epitaxial layer is such that mobile holes are provided in its conduction channel due to the strain put on its lattice by the supporting layer. A further layer (20) of semiconductor material (eg AISb) contiguous with the epitaxial layer (28) is doped to induce the conduction channel in the epitaxial layer and to provide modulation doping.
    • 孔是沿着形成在半导体材料(例如AlSb)的支撑层(26)上的半导体材料(例如GaSb)的外延层(28)中的导电沟道的电荷载流子,其具有比所述半导体材料 外延层的材料。 外延层(28)的材料在不受约束条件下具有不同于支撑层(26)的材料的晶格间距的晶格间距,其刚性足以使外延层材料的晶格变形。 外延层的材料是由于由支撑层放置在其栅格上的应变,在其导电通道中设置有移动孔。 掺杂与外延层(28)邻接的另一层半导体材料(例如AlSb),以引入外延层中的导电沟道并提供调制掺杂。