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High reliability of AlGaInP LED's with efficient transparent contacts for spatially uniform light emission

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5 Author(s)
Meng-Chyi Wu ; Res. Inst. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Lin, Jyh‐Feng ; Jou, Ming‐Jiuun ; Chang, Chuan‐Ming
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The indium-tin oxide (ITO) films with low sheet resistance and conducting transparency have been used on the AlGaInP double-heterostructure orange light-emitting diodes (LED's) to improve the light extraction from the LED surface and device reliability. The orange LED's with ITO films exhibit a light output power of 1 mW at 50 mA, which corresponds to an external quantum efficiency of 1.1%. They can operate stably for more than 3000 h at 20 mA and 25/spl deg/C without any degradation.<>

Published in:

Electron Device Letters, IEEE  (Volume:16 ,  Issue: 11 )