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InGaAsP Ex-situ characterization



Alexana Roshko, Kristine A. Bertness


An interlaboratory comparison has been undertaken of X-ray and photoluminescence measurements of InGaAsP on InP. Six 1 cm2 specimens are being measured, with nominal photoluminescence wavelengths of 1.1, 1.3 and 1.5 υm (2 of each). Preliminary maps of the specimens by X-ray and photoluminescence showed relatively large degrees of nonuniformity. This specimen nonuniformity appears to have dominated the variation in the X-ray measurements, making the results more sensitive to beam positioning and peak identification than to other instrument and/or measurement differences. The photoluminescence uniformity was sufficient to allow the variation between measurements by different instruments to be assessed. Offsets between measurements from different instruments were observed, and potential causes, such as pump wavelength, wavelength calibration, sample temperature, pump power density, and peak identification were identified.
Proceedings Title
Proc., Indium Phosphide and Related Materials Conference
Conference Dates
May 12-16, 2002
Conference Location
Conference Title
14th Indium, Phosphide and Related Materials Conference


InGaAsP, interlaboratory comparison, photoluminescence, ex-situ characterization


Roshko, A. and Bertness, K. (2002), InGaAsP Ex-situ characterization, Proc., Indium Phosphide and Related Materials Conference, Stockholm, -1, [online], (Accessed May 19, 2024)


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Created July 1, 2002, Updated January 27, 2020