Photoluminescence in (Ga,In)P at high pressure

Measurement of conduction band minima in ordered and disordered GaInP

“…Both peaks show a linear dependence on pressure similar to the results of Refs. [5,17,18], many authors report sublinear behaviour [16,[19][20][21] due to nonlinear compression of the lattice constant and ordering effects [16]. Our determined pressure coefficients agree with the values for disordered [16,17] and ordered [5,16,17] material, with the ordered alloy showing a smaller coefficient.…”

Photoluminescence of GaInP under high pressure

“…9 The difference between the theoretical and experimental results makes the detailed examinations of ordering in GaInP necessary. [10][11][12][13] Hydrostatic pressure can produce large variations in the electronic band structure without changing the crystal symmetry. [10][11][12][13] Hydrostatic pressure can produce large variations in the electronic band structure without changing the crystal symmetry.…”

Determination of ordering effects on GaInP pressure coefficients

“…We also use the uncorrected data from [17] (431 K) and [18] (77 K), the latter can be used without knowledge of the band-gap for completely disordered material at this temperature since we plot energy differences between samples and ratios only. Data from [19] is not used since the two samples measured were not from the same growth method. Figure 3 shows the pressure coefficient ratios of these four data sets (ratio is more ordered sample coefficient divided by that of the more disordered samples) plotted against the energy difference between samples from the same source.…”