High-efficiency AlInSb mid-infrared LED with dislocation filter layers for gas sensors

•AlxIn1-xSb LED (x = 9.8%) was developed to achieve high luminous intensity at 3.3 μm.•Dislocation filter layers were introduced and improved luminous efficiency.•Emission intensity under 100 mA condition is the highest of any commercial LEDs.•Developed LED is helpful to create low-power-consumption methane (CH4) gas sensor.