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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shin, Dong Soo Kim, Hyunsung Zheng, Dong Guang Choi, Hyo Shik Shim, Jong In |
| Copyright Year | 2015 |
| Abstract | Near-ultraviolet light-emitting diodes (NUV LEDs) with different numbers of quantum wells (QWs) were grown by using metal-organic chemical vapor deposition (MOCVD) to investigate the effects of the number of QWs on the performance of NUV LEDs. With increasing number of QWs from 5 to 7 when using the same quantum well growth process, the normalized external quantum efficiencies (EQE) of 6- and 7-QW NUV LEDs are increased by 19.7% and 30.4%, respectively at 35 A/cm2 compared with that of the 5-QW NUV LED. As the number of QWs is increased from 5 to 7, the forward voltage at 350 mA is decreased from 3.94 V to 3.78 V and 3.77 V. The red shift of the peak wavelength is also decreased with increasing number of QWs. These data suggest that the improved EQE, the reduced peak wavelength shift, and the improved electrical characteristics are due to an increase in effective active volume with increasing number of QWs in NUV LEDs. |
| Starting Page | 1554 |
| Ending Page | 1558 |
| Page Count | 5 |
| File Format | |
| ISSN | 03744884 |
| Journal | Journal of the Korean Physical Society |
| Volume Number | 66 |
| Issue Number | 10 |
| e-ISSN | 19768524 |
| Language | English |
| Publisher | The Korean Physical Society |
| Publisher Date | 2015-06-06 |
| Publisher Place | Seoul |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | QW pair Theoretical, Mathematical and Computational Physics Near-ultraviolet light-emitting diodes Physics Particle and Nuclear Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
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