Title page for etd-0717108-220842


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URN etd-0717108-220842
Author Yu-fong Lin
Author's Email Address No Public.
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Department Electro-Optical Engineering
Year 2007
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Time-resolved optical beam induced current mapping in InGaN LED
Date of Defense 2008-07-03
Page Count 60
Keyword
  • Time-resolved
  • LED
  • OBIC
  • Optical Beam Induced Current
  • Abstract We have implemented the time-resolved technique at frequency domain on a laser scanning microscope to investigate light emitting diodes. Leds are not high-speed device, so we use e-o modulator to change its frequency of Laser and finish the experiment. In this way, temporal response of a device can be mapped at high spatial resolution. We are using a Ti : sapphire laser and a high frequency phase sensitive lock-in loop to achieve time-resolved the dynamics properties of the light emitting devices.Laser used to excite carriers in the depletion region detected form the contract signal for scanning imaging. We can observe the OBIC effect and measure the response time of light emitting devices.
    Advisory Committee
  • Wood-Hi Cheng - chair
  • Bae-Heng Tseng - co-chair
  • Cheng-Wen Ko - co-chair
  • Fu -Jen Kao - advisor
  • Files
  • etd-0717108-220842.pdf
  • indicate access worldwide
    Date of Submission 2008-07-17

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