| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rapid response and high output light-emitting diode which emits red light and/or infrared light, and to provide a light-emitting diode lamp and a luminaire. <P>SOLUTION: The light-emitting diode comprises: a light emission part which includes an active layer of quantum well structure where a well layer consisting of a compound semiconductor having a composition formula of (Al<SB POS="POST">X1</SB>Ga<SB POS="POST">1-X1</SB>)As(0≤X1≤1) and a barrier layer are laminated alternately, and which includes a first clad layer and a second clad layer sandwiching the active layer; a current diffusion layer formed on the light emission part; and a functional substrate bonded to the current diffusion layer. The first and second clad layers consist of a compound semiconductor having a composition formula of (Al<SB POS="POST">X2</SB>Ga<SB POS="POST">1-X2</SB>)<SB POS="POST">Y1</SB>In<SB POS="POST">1-Y1</SB>P(0≤X2≤1, 0<Y1≤1), and the number of pairs of the well layer and barrier layer is 5 or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
