Abstract
A charge asymmetric resonance tunneling (CART) structure was applied to nitride-based blue light emitting diodes (LEDs) to enhance their output efficiency. It was found that with a 20-nm-thick In0.18Ga0.82N electron emitter layer, we could increase the LED output intensity from 28.3 minicandela (mcd) to 43.2 mcd (i.e., a 53% increase). However, a further increase in electron emitter layer thickness will reduce the intensity due to relaxation. It was also found that we could decrease the 20 mA forward voltage from 4.16 V to 3.58 V with a proper electron emitter layer.
Original language | English |
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Pages (from-to) | 1093-1095 |
Number of pages | 3 |
Journal | IEEE Transactions on Electron Devices |
Volume | 49 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2002 Jun |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering