Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - LEDs for formaldehyde detection at 3.6 mu m. .
AU - Krier, A.
AU - Sherstnev, V. V.
PY - 2001/2/7
Y1 - 2001/2/7
N2 - A mid-infrared light-emitting diode (LED) operating at 3.6 mum with a pulsed output power as high as 2 mW at room temperature is reported. The device is based on a double heterostructure of InAs0.42Sb0.18P0.40/ GaxIn1-xAs1-ySby/InAs0.42Sb0.18P0.40 grown by liquid phase epitaxy. The active region composition was adjusted using different Ga content (x = 0.05-0.17) over which range the band gap is approximately constant. The electrical and optical operating characteristics are reported. The emission spectra measured with and without 100% formaldehyde have also been measured using a short-path optical cell to demonstrate the potential of these LEDs for use in solid state formaldehyde gas sensors.
AB - A mid-infrared light-emitting diode (LED) operating at 3.6 mum with a pulsed output power as high as 2 mW at room temperature is reported. The device is based on a double heterostructure of InAs0.42Sb0.18P0.40/ GaxIn1-xAs1-ySby/InAs0.42Sb0.18P0.40 grown by liquid phase epitaxy. The active region composition was adjusted using different Ga content (x = 0.05-0.17) over which range the band gap is approximately constant. The electrical and optical operating characteristics are reported. The emission spectra measured with and without 100% formaldehyde have also been measured using a short-path optical cell to demonstrate the potential of these LEDs for use in solid state formaldehyde gas sensors.
U2 - 10.1088/0022-3727/34/3/330
DO - 10.1088/0022-3727/34/3/330
M3 - Journal article
VL - 34
SP - 428
EP - 432
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
SN - 0022-3727
IS - 3
ER -