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    • 2. 发明授权
    • Laterally varying II-VI alloys and uses thereof
    • 二次变化的II-VI合金及其用途
    • US09589793B2
    • 2017-03-07
    • US13126864
    • 2009-11-06
    • Cun-Zheng NingAnlian Pan
    • Cun-Zheng NingAnlian Pan
    • H01L31/06H01L21/02H01L31/0296H01L31/0352H01L33/02H01L33/28H01S5/10H01S5/327
    • H01L21/02557H01L21/02422H01L21/02491H01L21/0256H01L21/02562H01L21/02568H01L21/0262H01L21/02636H01L31/0296H01L31/0352H01L33/02H01L33/28H01L2924/0002H01S5/1042H01S5/327H01L2924/00
    • Described herein are semiconductor structures comprising laterally varying II-VI alloy layer formed over a surface of a substrate. Further, methods are provided for preparing laterally varying II-VI alloy layers over at least a portion of a surface of a substrate comprising contacting at least a portion of a surface of a substrate within a reaction zone with a chemical vapor under suitable reaction conditions to form a laterally varying II-VI alloy layer over the portion of the surface of the substrate, wherein the chemical vapor is generated by heating at least two II-VI binary compounds; and the reaction zone has a temperature gradient of at least 50-100° C. along an extent of the reaction zone. Also described here are devices such as lasers, light emitting diodes, detectors, or solar cells that can use such semiconductor structures. In the case of lasers, spatially varying wavelength can be realized while in the case of solar cells and detectors multiple solar cells can be achieved laterally where each cell absorbs solar energy of a given wavelength range such that entire solar spectrum can be covered by the said solar cell structure. For LED applications, spatial variation of alloy composition can be used to engineer colors of light emission.
    • 这里描述的是包括在衬底的表面上形成的横向变化的II-VI合金层的半导体结构。 此外,提供了用于在衬底的表面的至少一部分上制备横向变化的II-VI合金层的方法,包括使反应区内的衬底的至少一部分表面与合适的反应条件下的化学蒸气接触, 在衬底的表面的部分上形成横向变化的II-VI合金层,其中通过加热至少两种II-VI二元化合物产生化学蒸气; 并且反应区沿着反应区的程度具有至少50-100℃的温度梯度。 这里还描述了可以使用这种半导体结构的诸如激光器,发光二极管,检测器或太阳能电池的装置。 在激光器的情况下,可以实现空间变化的波长,而在太阳能电池和检测器的情况下,可以横向实现多个太阳能电池,其中每个电池吸收给定波长范围的太阳能,使得整个太阳能光谱可被所述 太阳能电池结构。 对于LED应用,合金成分的空间变化可用于工程发光的颜色。