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Systematic Analysis of the Photocurrent Spectroscopy on InGaN/GaN Blue Light-Emitting Diodes
- Authors
- Shin, Dong-Soo; Lee, Jong-Ik; Shim, Jong-In
- Issue Date
- Dec-2013
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Photocurrent spectroscopy; light-emitting diode; Stokes shift; joint density of states
- Citation
- IEEE Journal of Quantum Electronics, v.49, no.12, pp 1062 - 1065
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- IEEE Journal of Quantum Electronics
- Volume
- 49
- Number
- 12
- Start Page
- 1062
- End Page
- 1065
- ISSN
- 0018-9197
1558-1713
- Abstract
- We demonstrate a method of systematic analysis for the photocurrent spectroscopy on InGaN/GaN light-emitting diodes (LEDs). By normalizing photocurrent data at a photon energy of 3.2 eV for blue LEDs, we show that accurate comparison of active quantum wells is possible. Bias-dependent photocurrent measurements reveal that there are fixed points in photocurrent data from which an effective bandgap energy can be determined. The method presented in this paper can be useful when one needs to compare the LEDs fabricated at different times or by different processes.
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Related Researcher
- Shin, Dong Soo
- ERICA 첨단융합대학 (ERICA 반도체·디스플레이공학전공)