Patent ID: 9553231
Date: 2017-01-24
CPC Classifications: H01L,H01S,H05B

Claim:
1. A semiconductor layer sequence for an optoelectronic semiconductor chip, which sequence comprises: an n-conductive layer; a p-conductive layer; and an active zone located therebetween, wherein the active zone comprises N successive quantum wells along a growth direction (G) with N≧2 and Nε the quantum wells are separated from one another by barrier layers; at a first working point (W at least two of the first emission wavelengths L at a second working point (W the first current density (C for at least one i and at least one j with i, jε[1; N] the first current density (C the quantum wells are based on InGaN; thicknesses (T) of the quantum wells are each 1.5 nm and 5 nm; thicknesses (B) of the barrier layers are each 3 nm to 12 nm and the barrier layers are based on GaN, AlGaN or InGaN; 10≧N≧4; at the second working point (W for at least one i and at least one j a wavelength difference between L for at least one i and at least one j a wavelength difference between L at the first working point (W the average thicknesses of the quantum wells in the active zone vary by a first factor of at least 1.2 and of at most 1.5 and the indium contents of the quantum wells in the active zone vary by a second factor of at least 1.005 and of at most 1.2.