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Influence of trap filling and junction capacitance charging on photovoltage transients in HgCdTe-based infrared photodiode

机译:陷阱填充和结电容充电对基于HgCdTe的红外光电二极管中光电压瞬变的影响

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摘要

Open circuit transient photovoltage (TPV) decay measurements have been carried out on HgCdTe-based infrared photodiode at different bias-light power illumination. By employing a picosecond pulsed laser excitation with wavelength of 4.5 μm on steady background illumination, the TPV decay varying behavior has been observed. The effect of junction capacitance and carrier traps on TPV decay can be decreased to the minimum saturation values by increasing the bias illumination level. The study indicates the TPV decay time constants are dominated by the discharging of junction capacitance, trap emission and photocarrier recombination. The minority carrier lifetime are affected by the carrier injection level.
机译:开路瞬态光电压(TPV)衰减测量已经在基于HgCdTe的红外光电二极管上以不同的偏置光功率照明进行了。通过在稳定的背景照明下使用波长为4.5μm的皮秒脉冲激光激发,可以观察到TPV衰减的变化行为。通过增加偏置照度,可以将结电容和载流子陷阱对TPV衰减的影响减小到最小饱和值。研究表明,TPV衰减时间常数受结电容放电,陷阱发射和光载流子复合作用的支配。少数载流子寿命受载流子注入量的影响。

著录项

  • 来源
    《Optical and quantum electronics》 |2014年第8期|1049-1054|共6页
  • 作者单位

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

    School of electronic and information engineering, Shanghai University of Electric Power,2013 Pingliang Road, Shanghai 200090, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    HgCdTe-based infrared photodiode; Transient photovoltage; Time constant; Junction capacitance; Carrier trap;

    机译:基于HgCdTe的红外光电二极管;瞬态光电压;时间常数;结电容;载气阱;

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