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    Accelerated annealing of gallium arsenide solar cells
    1.
    发明公开
    Accelerated annealing of gallium arsenide solar cells 失效
    砷化镓太阳能电池的加速退火。

    公开(公告)号：EP0062399A2

    公开(公告)日：1982-10-13

    申请号：EP82300765.3

    申请日：1982-02-16

    申请人： Hughes Aircraft Company

    发明人： Knechtli, Ronald C. ,  Loo, Robert Y. ,  Kamath, Sanjiv G.

    IPC分类号： H01L31/18

    CPC分类号： H01L31/1864 ,  H01L21/3245 ,  H01L21/326 ,  H01L31/0547 ,  H01L31/1832 ,  Y02E10/52 ,  Y02E10/544 ,  Y02P70/521 ,  Y10S136/29 ,  Y10S148/084

    摘要： A method is provided for accelerating and improving the recovery of GaAs solar cells from the damage which they experience in space under high energy particle irradiation such as electrons, protons and neutrons. The method comprises combining thermal annealing with injection annealing. Injection annealing is the recovery from radiation damage resulting from minority carrier injection into the damaged semiconductor, nonradiative minority carrier combination of the injected minority carriers, transfer of the recombination energy to the crystal lattice and utilization of this energy to remove the defects caused by the high energy particle irradiation. The combined annealing of this invention is implemented by heating the solar cells to a moderate temperature (on the order of about 200°C to 300°C or less), while at the same time injecting the minority carriers by either of two methods: current injection (by applying an adequate forward bias voltage) or photo- injection (by exposing the cell to adequate light intensity). Sunlight directed onto the solar cells may be employed for heating the solar cells. Alternatively, energy dissipation in the solar cells caused by the flow of a forward bias current may be used to heat the solar cells.
    In one example, thermal annealing at 200°C alone was observed to bring the power output up to a level of about 75% of its original value from a level of about 50%, resulting from radiation-induced damage. Combined annealing, employing thermal annealing at 200°C in conjunction with simultaneous injection of minority carriers at a current density of 125 mA/cm 2 , was observed to bring the power output to a level of nearly 90%.

    High power capacity optical receiver apparatus and method employing distributed photodetectors
    4.
    发明公开
    High power capacity optical receiver apparatus and method employing distributed photodetectors 失效
    一种光接收器，具有高电容的性能和分布式光检测器施加方法。

    公开(公告)号：EP0613182A2

    公开(公告)日：1994-08-31

    申请号：EP94102505.8

    申请日：1994-02-19

    申请人： Hughes Aircraft Company

    发明人： Schaffner, James H. ,  Loo, Robert Y. ,  Pikulski, Joseph L. ,  Ng, Willie W.

    IPC分类号： H01L27/146 ,  H04B10/14 ,  G02B6/42 ,  G02B6/12

    CPC分类号： H04B10/69 ,  G02B6/42 ,  H01L27/144 ,  H01L27/1446 ,  H01L31/1085 ,  H04B10/6932

    摘要： A high power capacity optical receiver comprises an optical transmission channel (4) and a plurality of opto-electric photodetectors (2) distributed along said optical transmission channel (4) to transduce respective portions of an optical signal (36) propagating along said optical transmission channel (4) into respective electrical signals (38). An electrical transmission line (8) is provided with electrical input connections (14) from said photodetectors (2) distributed along said electrical transmission line (8). Further provided are a plurality of capacitance elements distributed along said electrical transmission line (8) to adjust the speed at which electrical signals (38) propagate along said electrical transmission line (8) so that the electrical inputs from said photodetectors (2) positively accumulate along said electrical transmission line (8).

    摘要翻译： 沿所述光传输信道（4）转导的光信号（36）的respectivement部分沿所述光传输传播的高功率容量的光接收器的光传输信道的方法包括：（4）和光电光电探测器有多个（2）分布 信道（4）代入respectivement电信号（38）。 电传输线（8）设置有从所述光电检测器（2）沿所述电传输线（8）分布式电输入连接（14）。 进一步提供的是沿所述电气传输线（8）分布以调节电信号（38）的速度电容元件的多个沿所述电气传输线传播（8）象从所述光电检测器（2）带正积累电输入 沿电传输线，所述（8）。