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Candela-class high-brightness InGaN/AlGaN double-heterostructure blue-light-emitting diodes by Shuji Nakamura; Takashi Mukai; Masayuki Senoh is a Engineering article available to read on EtoBox.

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Candela-class high-brightness InGaN/AlGaN double-heterostructure (DH) blue-light-emitting diodes (LEDs) with the luminous intensity over 1 cd were fabricated. As an active layer, a Zn-doped InGaN layer was used for the DH LEDs. The typical output power was 1500 μW and the external quantum efficiency was as high as 2.7% at a forward current of 20 mA at room temperature. The peak wavelength and the full width at half-maximum of the electroluminescence were 450 and 70 nm, respectively. This value of luminous intensity was the highest ever reported for blue LEDs.

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Author

Shuji Nakamura; Takashi Mukai; Masayuki Senoh

Publisher

AIP Publishing

Published

1994

Language

EN

Field

Engineering (Physical Sciences)